List of relevant MGN and MSN's which can be viewed on Maritme and Coastguard Agency website - see links page for MCA

MGN 318 - Training and certification of VTS personnel

MGN 401 -  Vessel Traffic Services (VTS) and Local Port Services (LPS) in the U.K.
(replaces MGNs 238, 239 & 240)                    

MSN 1796 - Designation on VTS Stations in the UK