Cheers all Gents..

I've Gone and done a Mix off all methods, which included cutting out the foam..

Nice and dry now!

Before my TT went to the big breakers yard in the sky last week I finally dried it out.

Thomar Air Dry 604200 Dehumidifier packs. They can be dried out on a radiator when wet and I made the mistake of buying 2 packs. They come with 2 bags in each pack so I have 4 now 🤣 Nothing I tried dried out the TT. Four of these did it in week with 24 hours to dry out after around 2 days.
Recommended and a good purchase.

I'd add if its really wet, I've found a carpet shampooer (the 3 in 1 type cylinder) or just a plain wet vac and then using either heat or a dehumidifier will dry it out quite quickly. Working A/C also helps in that respect, ideally if you can let it run for an hour or so with the temp set to highest and recirc tends to do the trick. Shampooing seems to actually help to dry it out overall (it seems to dry quicker I've found like that, not sure why or if it just seems thats the case).

I found that after leaving a car off the road since lockdown 1 (its been sorned all that time) that it had gone a bit nasty inside. Unfortunately I discovered that early in December. A good going through with the carpet shampoo in the machine and then a couple of hours with the A/C running like that dried it right out. Though it wasn't saturated to start with, just mouldy in a few places. I've had a couple of the crystal type dehumidifers in there (no way to get power to it where its parked other than a temporary extension lead) and they hadn't soaked anything noticable up the last time I checked.