Factual error: The Agusta A109 helicopter that drops the squad into Scotland carries a incorrect UK military serial. 'XZ2541' is one number too many - UK military serials are two letters, followed by three numbers. Also, at the time of filming the only Agusta A109s on the UK military register were operated by 8 Flt, Army Air Corps and were dedicated to SAS support. (00:07:30)
Gary Stedman
12th May 2019