Based at Elstree, (yeah, yeah, much moaning agreed with!) -quite common to pass overhead Stapleford.
Agree with Keef that calling is always a good idea, but more so than ever at a field like Stapleford which has a navaid (LAM VOR) actually on the field.
Maybe lessened slightly by RNAV and GPS, but VORs still tend to be like a honeypot to a GA passing directly overhead. Especially whe vertically limited by the TMA as well, Stapleford has got to be a classic example of where it MUST make sense to call, even if outside / above the ATZ.