Something on a Welsh beach

[Nige]

Many years ago a friend and I stumbled across this and, in retrospect, rather carelessly took this pic. Would anyone be able to shed any light on it please? Thanks 

[Marshallj]

My guess is that is an external fuel tank. 

[Rakkasan187]

I agree with Marshallj,,

 

Some type of drop tank..

 

Leigh 

[Preppy Picker]

Practice bomb.

[Nige]

Thanks for that. I hadn't considered such possibilities