Its quite simple ...book in VFR (if you need to PPR)
Call them up on the radio and announce your presence and request an ILS (vectored, procedural or whatever) for currency.
They will nearly always respond in the affirmative and sometimes enquire if you wish to switch to IFR. If you stay VFR then you are responsible for letting them know if an instruction would take you IFR (and saying unable to comply) otherwise keep a good look out and fly the ILS.
Remember you are ultimately responsible for ensuring clear separation from other aircraft unless you are in Class A in the UK.
Don't try and do this outside of the UK ... but do relax and enjoy.
Have 2 sets of Mk I eyeballs in the cockpit helps with all VFR flight. If you're under the hood then the passenger needs to be rated to fly the aircraft you're in (at least under FAA regs which I'm more familiar with) ..