If your range covers Popham to Sa'fen' there are many that you have missed out. WW, Denham, Blackbushe, Booker/Wycombe, Elstree, Rochester, Stapleford, to name but a few.
I would avoid Fairoaks. The school is very unfriendly (I even found yesterday that the Tower, who used to be very friendly, have become cold, distant and unwelcoming as if their salaries depended on it) and LTFC, who are a pleasant enough club have suffered a shambles with their instructing staff over the last year.
My experience of Redhill is also poor.
There are loads to choose from at Biggin, but trying to do circuits at the weekend can be difficult.
People speak well of WW and Stapleford, mixed reports from Elstree, bad reports from Panshanger.
Timothy