I have a recollection of what is presumably now the RAF Museum's Valiant being visible close to the Downham Market/Swaffham Road first time I went past about 40 years ago.
Yes that was XD 818 which was on display outside ops for many years, in camouflage guise (now back to anti-flash white at Cosford). Didn't know it was visible from the road but it it must have been, as it was the only Valiant at Marham after 1964-5