Thanks for all the “welcomes”
Quick update on my missing drain plug. The garage removed it and placed in the sink where it was duly tidied away by Mrs Calamity who assumed it was a wine bottle stopper! Travelworld has been forgiven. If you need a service / damp check, they are very good if a bit expensive. Just be prepared to play their “hunt the missing accessory game” when you buy the van back.