Railnet effectively existed in two versions the original planned and delivered version and then the never implemented post 2001 limited version. Railnet v1 between 1996 and 2001 served Shieldmuir, Low Fell, Doncaster, Warrington, Stafford, Bristol, Willesden, Tonbridge. Services also operated to Swansea, Cardiff, Newport, Penzance, Turo, Plymouth, Exeter, Taunton, Reading, Dover, Ipswich, Norwich, Rugby, Derby, Peterborough, Birmingham, York, Darlington, Carlisle and Edinburgh, all the other smaller stations disappeared from the network at this point. The service still had some TPO's sorting mail en-route. The system had 49 nightly diagrams as envisioned and contracted so the 40 class 67's together with the 16 class 325's was about right for the weekly needs.
The 2002 onwards service which never actually ran was to be limited to only the dedicated railnet hubs using trains carrying less time sensitive mail so second class and presorted operating only during the day, TPO's would have been withdrawn, this second version was proposed because the economics mail handling made the associated double handling by taking mail to passenger station more expensive than direct routes using road transport. The 67's where ordered for Railnet v1 which was a primarily diesel traction system.