This was in N gauge, which was marginally larger than 000. N gauge runs on 9.42 mm gauge track, as opposed to 9mm for 000. Being electrified, the track was laid on insulating plastic sleepers. Track pieces were joined by fishplates. The design of the track was different, using much wider radius curves, a failing of the shorter radius push-along curves.
The electric powered locomotives were different, with a choice of BR Class 23 Derby Sulzer and or Class 24 Baby Deltic diesel locomotives instead of the steam locomotives.
Other rolling stock was from the same diecast 000 mould but finished in a different colour schemes. They also had hook and eye couplings, used in most model railway designs.
In some cases, there were other minor detail changes, such as the BR express coach having a Perspex window slotted inside and more stencilled detail on the side.
The packaging names were all prefixed EL, e.g. EL80 for the Brake van.