The continence nurse recommended this company to me:
ps healthcare
I needed some pants with a pad for DS2 at night cos he can't pull his pull ups up properly (they are getting a bit snug).
I've also got a bed pad and a pad for his wheelchair for whilst he's toilet training.
They are brilliant, nothing is too much trouble and their Upsey Daisy range of protective pants are just ace...
They are also working on a range of swim nappies which should be out within 6-12 months.