All RAF ATC units can offer you whatever you want, QFE, QNH, RPS, and you can have it it inches, millibars (don't like hectopascals..)
However, if you are going to join the circuit with Military traffic, you are going to get the QFE like everyone else!
As An Ex RAF AATC, I can still convert millibars to inches by memory of the old Yellow Flight Information Handbook! Ie.1016 mb converts to 30.00 inches, 1015mb to 29.97 inches.. etc etc. And I left the RAF in 1991.
And for the civvies asking about charsts jepp etc, The RAF have their own versions. And very nice they are too. Google AIDU and you will find even civvies can purchase a wide range of flight planning docs and charts from the RAF.