In reply to EmmaAtkinson:
Mid roof medium wheel base front wheel drive Transit for the win. I'm 5ft 9inch and can *just about* stand up straight in them, and *just about* sleep happily across the way in them. Make sure it's FWD though, the RWD ones lose about 6inches in height on the inside due to the drive shaft etc.
It might help if you can say what your van buying budget is though, as £4k - £5k will get you a 2010 Transit with well under 100,000 miles, but you'll be lucky to find anything newer than a 2007 transporter for that, and even then it'll likely have upwards of 150,000 miles on it.
Things to look for on Transits - rust under the driver cab carpet/flooring. Rust on the engine mounts in the engine bay. Sills and wheel arches likely to have surface rust, but give them a good prodding to make sure it's not full depth. If it's getting towards 100,000 and none of the steering/suspension bushings and linkages have been replaced, they're probably well on the way to needing done. Check the roof - if it's been a work van and had a roof rack, worth checking no-one has been walking about up top and weakened the roof panel joints (speaking from experience here...they leak!!)
Use the DVLA MOT checker for any van to see its history and give you an idea of work done/recurring problems - https://www.check-mot.service.gov.uk/?_ga=2.173386275.1060377368.1497611091...
Good luck, happy van shopping!!
Gordon