I have just been able to find some numbers and an inspection stamp………….

In a circle B. A. P. 18. That’s the ‘B’ at 9 o’clock, the ‘A’ at 12 o’clock and the ‘P’ at 3 o’clock. With the 18 at the bottom

There is then a number stamp reading 77472/3

Also on the top of the lid there is evidence of a instruction plate but that’s gone.

So could it be Defiant ?

Cheers

Jules