I drive the mighty C152, and often pass the QE2 bridge at up to 2,400’, just outside the eastern end of your zone. Some of my club’s aircraft are mode A only, and a few don’t have a transponder at all.
I’m remaining in class G airspace at all times, but - assuming I’m not squawking mode C - would you find a courtesy call useful, just to confirm who I am and what altitude I’m at (particularly if you have traffic inbound to EGLC, who might get a TCAS TA from me).
Or, given the level of traffic trundling up and down past the bridge, would I just be blocking up your frequency for no real benefit? (Apart from practising my RT
)