White Waltham
To give WW their due, they don't charge a landing fee if you uplift more than about 40Lts of fuel. That would be equivalent to a landing fee of £1.20 for fuel priced at £1.05/Lt and uplifting the 40Lts.
I know of plenty of places that charge a tenner or more for a landing fee and then still want more than £1.05/Lt for fuel.
Also, compared to a lot of near to London airfields WW does have a unique atmosphere and a decent clubhouse/bar with friendly and helpful staff.
And no, I'm not based there or have anything to do with them other than being an occasional visitor.