Hi
On the issue of the body after dipping, as Stuart says with ProStrip you can leave, but I just had it done once and John, the body guy, primed it to keep any rust off before any work was done.
As to ProStrip being in Lincoln (or near), yes you can deliver there, but the work is actually done in Nottingham. We had the body on a dolly which was transported by a guy with a trailer to them, but as Stuart says they did offer a collection service for him.
I had the car done in in two batches (main body, then doors, tailgate and bonnet). Not necessary to do it this way, it was how we ended up doing it, so cost more, but that was how it unfolded. The cost for the body was around £1250 from memory, but simply ring them and ask and they will give you a quote.
Peter