Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.5.0.2
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2016
Nov. 10, 2016
Document and Entity Information [Abstract]    
Entity Registrant Name Adaptimmune Therapeutics PLC  
Entity Central Index Key 0001621227  
Document Type 10-Q  
Document Period End Date Sep. 30, 2016  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   424,711,900
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q3