Well,for those interested to know, I contacted NATS to complain that the NOTAM didn't have useful info and got a very good response from a nice man in AIS:
...you raise a valid point in relation to our use of Channel numbers when referring to DMEs. Whilst we make a point of supplying the CAA's GASIL editor with the associated VHF frequency details when compiling information for his 'Changes' sheet, we do not routinely include that detail in NOTAM or within the AD 2.19 tables in our AIP. However, we shall endeavour in future to add details of the frequencies to the AIP tables and to reflect them in any NOTAMs that refer.
He also said that they will soon be adding 'standalone' (i.e. not linked) subject index for the online version of the AIP, in response to requests from GA pilots.
So, 10 points to NATS/AIS - very responsive and helpful!
Andy
[ 11 July 2001: Message edited by: Aussie Andy ]