He will probably end up being an ambassador for the open university. Wonder how long it'll take to complete and whether it is undergrad or a conversion.
The same as any other 3 years full time or up to 8 part time. He will need a placement sorting 1st and met the requirements of HCPC. Its undergrad or MA if he hold the right degree to get on the course. It's quite a respected degree I've worked with 2 who become social workers via it.
As for OU ambassador role every OU alumni is more than happy to act as one.