FC
It is an A/G or FISO service...... as at least one non-LCY person is on the airwaves.
Yes, 3000 feet is generally the max. however, if LHR are on Easterlies then a bit higher may be given.
I heard that there wasn't to be a funday at LCY this year (Yeah, I know, everyday isa funday at LCY!!