This is it!
I was at the museum on Friday, 2nd visit in 5 years. Must go more often!
I'm sure I saw another one as well, blue if i remember. Not on display bu I could just see the fuel filler through a gap in a blanked off window.
You may have seen me - I had a 2003 LM tee shirt on and 2 scruffy kids with me!
Dickie
I'm sure I attached a pic of the GT40. It was white with a blue stripe if I get this next attachment wrong!