The LentiVector Company, leader in gene and cell therapy

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The LentiVector Company, leader in gene and cell therapy Jefferies Healthcare Conference New York, June 2016 Tim Watts, Chief Financial Officer

Disclaimer The information contained in this presentation is being supplied and communicated to you on a confidential basis solely for your information and may not be reproduced, further distributed to any other person or published, in whole or in part, for any purpose. For the purpose of this disclaimer, presentation means this document, any oral presentation, any question and answer session and any written or oral material discussed or distributed during the presentation meetings or any presentation to which this document relates. Cohort 2 Dose Administration 3 months (UPDRS) 6 months (UPDRS) 1 year (UPDRS) 2 years (UPDRS) Although 1, n=3 reasonable care 1xhas been taken to ensure that the facts stated Mean in this 27% presentation are Mean accurate 30% and that the opinions expressed are fair Mean and 20% reasonable, the contents of this presentation have not been formally verified by Oxford Max. BioMedica up to 30% plc (the Company ) Max. up to 50% or any other Max. person. up to Accordingly, 44% no Max. representation up to 30% or warranty, expressed or implied, is made as to the fairness, accuracy, completeness or correctness of the information and opinions contained in this presentation, and no 2, reliance n=3 should be placed on such information or opinions. Further, the Mean information 28% in this presentation is not complete Mean and29% may be changed. Neither the Company nor any of its respective members, directors, officers or employees Max. up nor to any 53% other person Max. accepts up to 53% any liability whatsoever for any loss howsoever arising from any use of such information or opinions or otherwise arising in connection with this presentation. 3, n=3 Enhanced Mean 26% This presentation does not constitute an offer to sell or a solicitation of offers to buy Ordinary Shares in the Company (the Securities ). The Securities have not been registered under the US Securities Act of 1933, as amended (the Securities Act ), or qualified for sale under the law of any state or other jurisdiction of the United States of America and may not be offered or sold in the United States of America except pursuant to such registration or an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act. Neither the United States Securities and Exchange Commission nor any securities regulatory body of any state or other jurisdiction of the United States of America, nor any securities regulatory body of any other country or political subdivision thereof, has approved or disapproved of this presentation or the securities discussed herein or passed on the accuracy or adequacy of the contents of this presentation. Any representation to the contrary is unlawful. This presentation is being communicated only to U.S. persons that are qualified institutional buyers within the meaning of Rule 144A under the Securities Act or institutions that are accredited investors within the meaning of Rule 501 under the Securities Act. This presentation may contain forwardlooking statements that reflect the Company's current expectations regarding future events, its liquidity and results of operations and its future working capital requirements. Forwardlooking statements involve risks and uncertainties. Actual events could differ materially from those projected herein and depend on a number of factors, including the success of the Company's development strategies, the successful and timely completion of clinical studies, securing satisfactory licensing agreements for products, the ability of the Company to obtain additional financing for its operations and the market conditions affecting the availability and terms of such financing. By participating in this presentation you agree to be bound by the foregoing restrictions and the other terms of this disclaimer. 2

Investment Proposition a single investment in the success of a broad range of gene and cell therapy products from multiple companies Oxford BioMedica is a gene and cell therapy company with the leading lentiviral vector delivery platform (LentiVector ) Cohort2 Dose 1, n=3 1x 2, n=3 3, n=3 Gene and cell therapy set to grow into a multibillion US$ sector Administration 3 monthsis (UPDRS) 6 months (UPDRS) 1 year (UPDRS) 2 years (UPDRS) over the next 510 years Mean 27% 1 Max. the up to 50% Max.next up to 44% Several ex vivo products likely to reach market within 23 years Multiple players in ex vivo cell therapy CART, TCR, Stem Cells, NK cells, etc. Mean 28% Many in vivo clinical and CNS Max.studies, up to 53% particularly Max. upin to ophthalmology 53% Max. up to 56% Mean 26% Enhanced Lentiviral vectors have advantages over other vector types 2 Ex vivo cell therapies require integrating vectors lentiviral vectors are the preferred choice Lentiviral vectors beginning to demonstrate longterm efficacy which supports the oneoff treatment hypothesis OXB s highly soughtafter LentiVector gene delivery platform 3 Can be used for both in vivo and ex vivo lentiviral vector products Founded on 20 years experience of delivering lentiviruses in vivo Integrated combination of our IP, employees expertise and bioprocessing and laboratory facilities OXB s product interests 4 3 Two inhouse products to enter Phase I/II clinical studies in next 12 months and a CART preclinical program targeting solid tumours Economic interest in partners products: Sanofi (SAR422459/SAR421869); Novartis (CTL019 and other undisclosed CART programme); Immune Design (LV305) and GSK (two undisclosed rare orphan products)

Oxford BioMedica, the integrated LentiVector Company Our USP is based on a unique combination of: Cohort2 Dose 1 Administration intellectual property including 1, n=3 patents and1x integrated knowhow, 2, n=3 expert staff clinical & regulatory expertise 1 year (UPDRS) 2 years (UPDRS) Mean 27% Product research Max. upand to 50%development Max. up to 44% Clinical and regulatory expertise 28% Four product candidates approved Mean for the clinic One further productapproved for the clinic before Mean 26% end of 2016 and laboratory Enhanced 3, n=3 bioprocessing facilities product development experience 6 months (UPDRS) 3 months (UPDRS) 3 Expertise 2 IP Ownership 4 Corporate knowhow Trade secrets, materials Proprietary analytics Lentiviral vector patent estate 20 years experience in lentiviral vector sector Expert staff Three GMP production suites Process R&D Laboratories for GMP analytical testing

Oxford BioMedica, the LentiVector Company at a glance 20 years experience Formed out of Oxford University in 1996 specialising in lentiviral products 1 st to administer a lentiviral vector in vivo (both the brain and the eye) Cohort 2 Dose Administration 3 months (UPDRS) 6 months (UPDRS) 1 year (UPDRS) 2 years (UPDRS) 1, n=3 Over 601xpatients treated in four Phase Mean 27% I/II studies, Mean with 30% encouraging indications 2, n=3 Mean 28% Max. up to 50% Max. up to 44% of efficacy lasting up to four years and no significant safety issues Integrated LentiVector gene delivery platform IP extensive IP comprising both patents and knowhow Facilities stateoftheart bioprocessing and laboratory facilities 3, n=3 Enhanced Mean 26% Employees Over 230 staff, many highly qualified and experienced Quality robust quality processes for lentiviral vector production Inhouse products three priority programmes in Parkinson's Disease, corneal graft rejection and a CART approach to solid tumours Partnerships/ licences with Novartis, Sanofi, GSK and Immune Design, and ongoing discussions with several other potential partners Revenue growth gross income 18.8m in 2015, with 12.4m from bioprocessing and process development up 72% since FY 2014 5

Products

Products Oxford BioMedica has an interest in many gene and cell therapy projects and our integrated platform technology is instrumental in the following whollyowned and partnered / royaltybearing programmes 2 Product Cohort Indication Dose Priority programmes 1x 1, n=3 OXB102 2, n=3 OXB202 OXB302 3, n=3 Research/ Administration PreClinical Parkinson s disease (Central Nervous System) Corneal graft rejection (Ophthalmology) Cancer (multiple) (Oncology) Phase I 3 months (UPDRS) Phase I/II Phase 1 III year (UPDRS)Approval 2 years (UPDRS) Mean 27% Max. up to 50% Max. up to 44% Mean 28% Meanprogrammes 34% at Mean least 29% to proof of Enhanced Phase (UPDRS) II 6 months Mean 26% Goal: to develop inhouse the priority concept in humans; then consider strategic options available Other candidates OXB201 Wet AMD (Ophthalmology) OXB301 Cancer (multiple) (Oncology) Goal: to find ways of progressing requiring lower resources from OXB Partnered /IP enabled & royalty bearing products 7 SAR422459 Stargardt disease (Ophthalmology) SAR421869 Usher syndrome type 1B (Ophthalmology) CTL019 Cancer (multiple) (Oncology) Undisclosed CART Cancer (multiple) (Oncology) LV305 Cancer (multiple) (Oncology) Undisclosed Undisclosed Undisclosed Undisclosed Goals: to support these partners and products to give best chance of success and to use LentiVector platform to establish more partnerships with economic interests in partners products

OXB102 for Parkinson s Disease Overview Programme Status Phase I/II regulatory approval submission underway Study approved by MHRA (UK authority) 3 months (UPDRS) 6 monthsprotocol (UPDRS) 1 year (UPDRS) 2 years (UPDRS) and submission Q3 2016 for ANSM (French 1, n=3 1x Mean 27% authority) Max. up to 50% Max. up to 44% Uses Lentiviral vector technology to deliver genes for 3 Same Cambridge and Paris sites to be used as for enzymes required 2, n=3 for DA synthesis Mean 28% OXB101 Phase I/II study, with Max. up to 56% potential for an extra Administered locally to the striatum, where DA is site in UK normally released 3, n=3 Enhanced Mean 26% 1st patient likely to be dosed during Q3 2016 Converts nondopaminergic cells to replacement of DA Dose escalation over three cohorts of six patients per Evidence of at least 4 year duration emerging from cohort and dose confirmation cohort of 12 patients OXB101 patient followup OXB101 (ProSavin )/OXB102 aims to provide 2 dopamine (DA) replacement to patients with Cohort Dose Administration Parkinson s disease Market size Parkinson s disease affects millions of people worldwide1 Currently 1.7 million adults affected with PD in seven major markets (US, Japan, and EU 5)1 This is expected to rise to 1 million in the US and 880 thousand in the EU by 2022 due to an aging population1 1 PharmaPoint 8 Parkinson s Disease Global Forecast & Market Analysis to 2022, Global Data June 2015

OXB202 for Corneal Graft Rejection Overview Illustrative Results OXB202 is designed to prevent corneal graft rejection Efficacy in rabbit model of Reduction in corneal NV, Despite one of the most successful tissue transplants, opacity and 2immune rejection (aggressive)3 1 year (UPDRS) Cohort2 Dose 6 months (UPDRS) years (UPDRS) a significant number of grafts areadministration rejected due to 3 months (UPDRS) infiltration in a rabbit PK 1, n=3 1x Mean 27% corneal vascularisation (NV) model5 Max. up to 50% Max. up to 44% OXB202 is a human donor cornea genetically modified with the vector as OXB201 to 28% 2, n=3 same lentiviral Mean secrete 2 antiangiogenesis proteins, endostatin and angiostatin 3, n=3 Enhanced Mean 26% This ex vivo treatment of donor corneas prior to transplant inhibits NV and, consequently, graft rejection Approximately 100,000 corneal grafts are performed every year worldwide1 This figure, representing only 1% all patients in need of a transplant, will increase significantly as countries develop their own eye banking infrastructure2 Company estimates peak sales range of 120m to 415m Preclinical Data Programme Status Submit clinical trial application (CTA) by end of 2016 for Phase I/II clinical study OXB202 program supported by extensive OXB201 data (nonclinical and clinical) Clinical trial may involve up to 40 patients, starting with severe patients and progressing to less severe Moorfield Eye Hospital is the UK site, with the potential for a US site 9

OXB302 for Targeting Solid Cancer Tumours (CART 5T4) Illustrative Results Overview Expression of 5T4 Chimeric Antigen Receptors (CARs) enable the redirection of a tumours: patient s T cells todose target cancer cells expressing a specific tumour 2 Cohort Administration 3 months (UPDRS) human 6 months (UPDRS) antigen 1, n=3 1x Mean 27% OXB302 is a combination of our LentiVector and 5T4 Max. up to 50% CART 5T4 targets 5T4, an oncofoetal antigen expressed on the 2, n=3 tumours and some Mean 28% surface of most solid haematological malignancies 3, n=3 The restricted expression profile of 5T4Enhanced on normal tissues Mean 26% combined with its broad expression on tumour cells (including cancer stem cells) make 5T4 an attractive target for therapeutic intervention on primary and metastatic 1 year (UPDRS) 2 years (UPDRS) Max. up to 44% Preclinical Data Programme Status 2 different OXB302 Lentiviral based vectors have been produced End of preclinical studies expected by end of 2016 Both OXB302 vectors transduce human PBMCs CAR5T4 transduced human T cells show good growth kinetics and secrete cytokines in response to in vitro challenge with a range of human tumor cell lines Following demonstration of preclinical proof of concept, clinical planning for OXB302 will be initiated In vivo testing has demonstrated efficacy in an industry standard tumour challenge model 10

Other proprietary R&D activity Inhouse Product Discovery/Research providing a flow of new product opportunities Cohort 2 Dose Administration 3 months (UPDRS) 6 months (UPDRS) 1 year (UPDRS) 2 years (UPDRS) 1, n=3 1x Mean 27% Several ocular orphan diseases programmes CNS orphan disease programme 2, n=3 Mean 28% Respiratory orphan disease programme Technical developments continuous improvement of the LentiVector platform Cell Max. and up to 50% vector engineering Max. up to 44% projects Max. up to 30% improve bioprocessing yield for example: TRAP/TRiP system development Packaging & producer cell lines 3, n=3 Enhanced Mean 26% Analytical methods improvements to improve efficiency and effectiveness of testing Innovation and optimisation to build longterm value 11

Intellectual Property

LentiVector Platform IP & Key Intellectual Property Expiration 2017/2018 2021/2023 2029 2034 Beyond Cohort 2 Dose Administration 3 months (UPDRS) 6 months (UPDRS) 1 year (UPDRS) 2 years (UPDRS) 1, n=3 1x Mean 27% Patents Licence Max. up to 50% payments Max. and up to 44% royalty interest 2, n=3 3 rd generation Mean 28% minimal Sanofi SAR422459 & SAR421869 3, n=3 vectors Enhanced Mean 26% Safety features for clinical use Downstream processing of bioprocessed vector TRiP system for improved bioprocessing titres in third party products Novartis CTL019 & 2 nd CART Immune Design LV305 GSK Two rare orphan indications Knowhow Lentiviral vector knowhow relating to: Bioprocessing Processes, Cell and Vector Engineering and Proprietary Analytics 13

Facilities

Oxford BioMedica Facilities in the UK Cohort2 Dose Administration 3 months (UPDRS) 6 months (UPDRS) 1 year (UPDRS) 2 years (UPDRS) 1, n=3 1x Mean 27% Max. up to 50% Max. up to 44% Mean 28% Mean 26% 2, n=3 Harrow House & Chancery Gate 19, 375 sq.ft (1,800 sq.m) 3, n=3 cgmp production Enhanced facility GMP QC microbiology laboratories Raw material testing GMP cold chain warehouse & office space Windrush Court (opening) Corporate HQ & Laboratories 71,955 sq. ft (6,684 sq. m) GMP Warehouse Hub 2,691 sq. ft (250 sq. m). Yarnton 18,300 sq. ft (1,700 sq. m) cgmp production facility Facilities less than 1 hour from London Heathrow Airport 15 Source: https://resources.oncourse.iu.edu/access /content/user/l eema/profilepage/oxford.html

Specialist Bioprocessing Facilities (all located in Oxford, UK) Two separate bioprocessing sites (total clean rooms 1,200m 2 /12,919ft 2 ) Cohort 2 Dose Administration 3 months (UPDRS) 6 months (UPDRS) 1 year (UPDRS) 2 years (UPDRS) 1, n=3 1x Mean 27% 2, n=3 Mean 28% Laboratories (2,136m 2 /22,992ft 2 ) Max. up to 50% Max. up to 44% 3, n=3 Enhanced Mean 26% Nine Tissue Two independent Two Analytical GMP2 facility One independent Culture GMP clean room Services Group designed for up to GMP clean room Laboratories with suites (GMP1 and (ASG) two 200L single suite (GMP4) of 24 Microsafety GMP2) totalling Laboratories use bioreactors 560m2/6,030ft2 Cabinets 640m2/6,889ft2 Harrow House Yarnton Windrush Court Laboratories Cell Engineering Laboratory Potential for further expansion Potential for use with 200L single use bioreactors Three Bio Safety Laboratory Category 3 (BSL C3) Laboratories Two Process Research and Development (PR&D) Laboratories One PCR suite Separate QC Chemistry and Microbiology Laboratories Clinical Analysis Laboratory Separate HPLC and FACS Suites 16

Future Vision and Summary

2016/2017 Potential Newsflow Inhouse priority products OXB102 Phase I/II first patient dosed Cohort 2 Dose Administration 3 months (UPDRS) 6 months (UPDRS) 1 year (UPDRS) 2 years (UPDRS) OXB202 Phase I/II study CTA filing in H2 1, n=3 1x Mean 27% OXB302 preclinical study results 2, n=3 Mean 28% Partners products Novartis CTL019 study results Max. up to 50% Max. up to 44% 3, n=3 Enhanced Mean 26% Novartis CTL019 BLA submission LentiVector delivery platform Successful development of 200L bioreactor serumfree suspension process to produce lentiviral vectors Further contracts with new partners giving us longterm economic interest in partners product candidates 18

Vision of Oxford BioMedica, the LentiVector Company by end 2018 Inhouse Cohort2 Partnerships Dose OXB102 1, n=3 1x Phase I/II first three cohort data OXB202 2, n=3 Phase I/II first two cohort data 3, n=3 OXB302 In Phase I/II clinical study New product candidates emerging from research/discovery using the LentiVector platform Administration Novartis Enhanced 3 months (UPDRS) Bioprocessing 6 months (UPDRS) Mean 27% CTL019 launched Max. up to 50% Oxford BioMedica supplying commercial Mean 28% material Royalties from CTL019 Second CART product into Mean 26% clinical developmentfurther CART programmes assumed Sanofi SAR422459 in pivotal trial (Phase IIb/Phase III) Immune Design LV305 progressing well in clinical development Multiple further partnerships giving Oxford BioMedica economic interests in a range of gene and cell therapy products 19 1 year (UPDRS) 2 years (UPDRS) Facilities operating at, or very near capacity Max. up to 44%

Summary: a world leading gene and cell therapy company Cohort2 Dose 1, n=3 1x 2, n=3 3, n=3 Administration Enhanced 1 year (UPDRS) 2 years (UPDRS) Mean 28% Mean 26% Lentiviral vectors have advantages over other vector types 2 OXB s highly soughtafter LentiVector gene delivery platform for both in vivo and ex vivo lentiviral vector products 3 20 6 months (UPDRS) Gene and cell therapy is set to grow into a multibillion Mean 27% US$ sector Mean over 20% the Max. up to 30% Max. up to 50% Max. up to 44% Max. up to 30% next 510 years 1 4 3 months (UPDRS) OXB s product interests include inhouse focused clinical and preclinical pipeline and an economic interest in partners products

Contact Us Oxford BioMedica plc Windrush Court Transport Way Oxford OX4 6LT John Dawson, CEO Tim Watts, CFO Tel: +44 (0) 1865 783 000 enquiries@oxfordbiomedica.co.uk www.oxfordbiomedica.co.uk