The Bassingbourne ATC Squadron have a complete nose section just like yours.Maybe they could offer advice
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The reason I think its a Bea is that a nearby airfield (Glenegadale) once operated Beafighters and presumably lost some locally.
Memories are made of this.
Brought back memories of happy C118 DAYS at Prestwick.Pity you couldn’t attach the sound.
Thanks for that Andy at least I must be on the right track