Spec for NTF

[N R A]

The specification for NTF is contained in BS 7567 - Electronic transfer 
of geographic information (NTF)

ISBN 0 580 20872 9

I assume it's available from the BSI at either
        BSI
        2 Park Street
        London
        W1A 2BS
or
        BSI
        Linford Wood
        Milton Keynes
        MK14 6LE

Sorry don't know the price, as work bought it.

Steve Culshaw
NRA North West
e-mail : nra at cix.compulink.co.uk (general usage)
or         sculshaw at cix.compulink.co.uk (Private - only checked at best 
weekly)