There is also a couple of options in the North West which are probably not much different to going to the Humber.
I'm with Poly. A 300mile trip (each way) to negotiate, a 300mile trip to drop the boat off for re-tubing, and another 300mile trip to collect it. If you can't make those trips tick other boxes is going to cost a fair bit. So 1800miles in my car would cost me £200 for the fuel, 30-40 hours of time. I'm not sure driving 10+ hrs per day makes sense so and overnight in a lodge will add another bundle of notes, and thats before wear and tear on the car, the trailer and the boat!
North West guys include: North West RIBS and Inflatables (posts here as Dave Cowell) (112miles, 2hour drive)
SIT are the other guys. Not sure if they are on here but based at Leyland - so pretty much same distance
I have no experience of any of them. Both have good feeback on here. No idea of costs from any of them. The rough guide price is ~£600 per m of boat (probably +VAT).
I've not heard bad things of any of the retube guys in the UK - but it would only take one bit of bad luck to need to go back because of an issue. The distance would be an issue then again... and repairs often take > 1 day, so double up the issue..
Some people have company cars, travel the country for work and could make all that fit in with other things. Other people are time poor and would rather use what time they had for boating! The boat looks like its down souf so I guess if it could go straight to the tuber from collection some journey can be avoided..
And remember - a retube thread:
As for tube age... I think people typically say 15 years for hypalon. But there are people who manage 30, and people who have so many patches by 10 that they wouldn't know the state of underneath. Has it been kept in the water?
They aren't the worst looking tubes I've seen! People have revived far worse faded orange tubes. If the leaks are on valves etc there may be cheaper solutions - but that might mean taking the boat to the tuber to discuss options..
I suspect tubers get lots of "How much would this boat on B&O cost to re-tube" questions. Most of which result in the boat not being bought. Your will probably struggle to get hard numbers till you actually own the boat and are likely to put work their way...