Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information
6 Months Ended
Jun. 30, 2022
Cover [Abstract]  
Document Type 10-Q
Document Period End Date Jun. 30, 2022
Document Transition Report false
Document Quarterly Report true
Entity File Number 001-37368
Entity Incorporation, State or Country Code X0
Entity Address, Address Line One 60 Jubilee Avenue, Milton Park
Entity Address, City or Town Abingdon, Oxfordshire
Entity Address, Country GB
Entity Address, Postal Zip Code OX14 4RX
City Area Code 44
Entity Tax Identification Number 00-0000000
Title of 12(b) Security American Depositary Shares, each representing 6 Ordinary Shares, par value £0.001 per share
Local Phone Number 1235 430000
Security Exchange Name NASDAQ
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Trading Symbol ADAP
Entity Common Stock, Shares Outstanding 980,222,862
Entity Central Index Key 0001621227
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2022
Document Fiscal Period Focus Q2
Amendment Flag false