Hi guys

I posted this on TOCH without response! Any ideas?

Mark has just sent me details regarding:

'Stirling Shot Down by Southampton A.A. "B" Battery RM (Royal Marines) 18th August 1940.'

The incident occurred at 1318 hours and the aircraft came down at U5576, which Mark believes may be Charlton, Wilts.

Who can help solve this 'mystery'?