Inflatable Hot Tub air leak

LShepherd7

My 'Lay-Z Spa Hawaii Hydro-jet Pro' inflatable hot tub has developed an air leak, and after hours of looking and spraying soapy water all over it I still cant find where Its leaking from!!
Does anyone know of any companies that have a repair service for Inflatable hot tubs, preferably in the North West of England, if not anywhere in the UK?
There are companies on the internet that repair hard shell hot tubs but I cant find any that repair Inflatable hot tubs. 
Thanks.

Mutton_Geoff

Have you checked the non return air valve?

https://www.deckinghero.com/maintenance/inflatable-hot-tub-repair