In this 'incarnation' BAC Express have not really recruited a non type rated FO so would doubt there is any hard and fast rule.
Mr HD has been the owner for 3 years, so hardly new.
Sad to see the old name go, s'pose its a fresh start, but there are still a few old campaigners out there who look at BAC with a watery eye (!!).
Interesting to see that there is about to be a new German operater basing an SD3-60 at Coventry, must be a growing market for the old shed again.