To be frank PhilipG, for the "Loop", that's about as aggressive you can get. I've probably flown it at least 100 times in 4 different aircraft types and, for non-native-to-UK pilots, some are clearly enjoying themselves and quote comfortable with both aircraft and low level flying in the UKLFS. This is the last place you need to pull 9Gz at low level - if it is, you've porked the racing line and your judgement sucks.
Sorry but unless I've misinterpreted, your comment comes across as quite amateur to a seasoned operator. This because the jet is now cleared for the full profile and these pilots are clearly flying with due regard to the terrain not the load limit of the aircraft.