From what I can tell... structurally underneath seems OK. Its had welding done. The MOT history paints a picture.
Doesn't look like there was any welding needed for 2 years. Could be more is due! Could be there is not much left to weld!

I've been on the lookout for a 4x4 Bongo. Aiming rear kitchen convert, tow bar, roofrack and pullout awning eventually. One appeared locally. Very locally in fact! I cant decide if that is swaying my decision. I have a fear of buying a van 150 miles away, turning up by train to take it home and find...