Evening Graeme,
Just looking in while having my lunch break, been nobody about this morning!
A quick stab at your "simple one", is that a Hawker Typhoon firing off a pair of rockets?
Edit:
Lunch break over now and back to work, no lights on and I think that Graeme has gone to bed now (see Challenge thread).
Busy afternoon ahead here, so I will request Open House if judged correct
