I knew the Crash & Smash Team Chief who moved XD818 from Marham to Hendon, he told me that when they got the wings off out of interest they decided to NDT the main spars to see if they were cracked, they were not.
"Beagle I had a good look around the Valiant when doing the AAR introduction course at the AAR school; it was indeed a lot roomier than the Tin Triangle!"
I agree with you, there is a Valiant Cockpit at Dalcross Airport that I spent some time trying to restore, lots of room I agree much more than the Vulcan, but you have to be slim to get between the seat to get to the flight deck.