Just been away with grandson who is not quite potty trained. There were a couple of accidents. Will the seat covers on my 2007 English spec Trtion remove and wash. I don't want to risk shrinking them.

I would not risk it. It may be better to hire a upholstery cleaner/Vax type and use that. In the past on furniture in the home I have used a dash of white vinegar in water to neutralise then use a carpet spray cleaner with a sponge. You could also use a steamer with furniture attachment and a low heat level. The Vax is the best option as that injects the detergent into materials and sucks it back out leaving furniture only damp. Others with more experience will probably post soon.

We had all the covers off our 03 Triton and put them through the washer at 40c, with no problem, came op like new.
Dave

We have a 2002 Eriba...just removed and put through the washing machine. No shrinkage and came up like new.....

We've never washed Eriba covers but did once do a set of Hymer Motorhome seat covers which, although very grubby, came out like new and I don't think they would be very different from Hymer caravan covers.
TonyP

I hand washed one cover, and although it was a bit of a battle to remove and replace, it came up nice and clean and no sign of shrinkage. I was surprised at the colour of the water in the wash though, obviously needed some attention.