Lancaster nose art, were they saved after the war?

In 1959 I recorded panels from the following Lancasters at the IWM in Lambeth:

R5692, JB345, LM584, PD426.

Where they are now, I know not.
Also, I believe that the original “Johnny Walker” art is on display at Newark.
Jim

Aren’t there some at Hendon, in the Bomber Hall? That may well also be nonsense-it’s ages since I’ve been!

Very vague memory of some RAF nose art panels (may not be Lanc) in the old Essex Aviation Society exhibition at Duxford? Mounted in the ceiling? Very likely wrong on more than one count…!

Several Canadian Halifax nose art panels were cut from the aircraft and brought back to Canada but no Lancaster nose art panels exist that I am aware of?