It might be an idea to give Alison Noice a ring; she is the regional VHF SRC Assessor, and is based in portsmouth. Her number is 023 9237 9626, and she should be able to tell you when the courses are being done.
Also, I'm fairly sure the Portsmouth Outdoor centre do them,
www.portsmouthoutdoor.co.uk.
I'm at uni in portsmouth, and give it a couple of months, hopefully I'll be a SRC Assessor by then!