I don't know if it's what your looking for but my site offers recognised training via 2 companies, PB Training Services and Studies in Work. We have teamed up with them to offer a range of training for school caretakers. Anything from Manual Handling, Swimming Pool care, Portable Appliance Testing, First Aid (4 day), Portable Scafold Tower Errection, Fire and Evacuation to Risk Assessment Awareness.
The good thing is, they can come out to you and train your staff. They are really freindly and helpful and have gained a good reputation throughout the industry. (If you name my site, you'll also get a discount). No harlm in giving them a ring.
I'll not link directly to them (or my site) as that would be unfair on this site. I hope that offers some help!