How do you know they are RAF personnel flying RAF aircraft?
Hmmm.....maybe it's because the RAF/RN (inc. any of their subsiduaries) is the only outfit to fly Hawks in the UK right now?
Or maybe it's the presence of a roundel and an XX123 UK military airframe registration that gave it away?
Excellent military aviation phots completely at home in a military aviation forum. Keep 'em coming.