Exhibit 99.1 Immunocore Reports 2022 Financial Results and Provides Business Update KIMMTRAK / tebentafusp net revenues of £42 million ($51 million) in Q4 2022 and £117 million ($141 million) in 2022; approved in over 30 countries and nearly 200 patients on global early access program Enrolling IMC-F106C (PRAME-HLA-A02) in monotherapy and combination arms of Phase 1/2 clinical trial and expanding PRAME franchise, including first-in-class PRAME-HLA-A24 target and a PRAME HLA-A02 half-life extension IND plann ...

IMMUNOCORE Transformative Medicines for Patients JANUARY 2023 Forward-looking statement 2 This presentation contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as "may," "can," "will," "believe," "expect," "plan," "anticipate," "potential" and similar expressions (as well as other words or expressions referencing future events or circumstances) are intended to identify forward-looking statements. All statements, other than statements of ...