The CBYA is happy to facilitate sailing courses for our members. We recommend Go-n-Sail who are an RYA-approved training centre. See https://go-n-sail.com/
They are also on facebook at https://www.facebook.com/gonsail/
Shane & Debbie Cole are a great couple and run excellent courses.
Bob Gordon, Edo Volker & Hugh Epsom completed a Day Skipper (Tidal) course with Go-n-Sail in October 2014 which was great fun (as evidenced by the photo above!)
If any one is interested, please contact me for more details.