Hi Guys. Still here. Yes, the usual Hornby tinplate track that most of us are familiar with dates back to the 1920s. There were two radii, 1 ft. and 2 ft. Note UK users refer to the radius, not diameter, so the larger Hornby 2 ft. radius would be 4 ft. or 48 inch diameter - 048. Both were available as clockwork or electric, together with the usual turnouts, crossings, turntable etc. General rule is, cambered or elevated track is pre war whereas post war track was level. All Hornby track should be marked - could be Hornby Series on one end of a sleeper (tie) or Meccano on one end of a tie and England on the other end. Track pins were shorter, post war.
Post war, track pins were shorter, and, in England, only clockwork track was made. However, Hornby in France continued making 3 rail track into the 1960s, with level ties. Look for Serie Hornby trademarks.
Hornby 3 rail track has two pins at one end, and the third pin at the other end, unlike Lionel who put all three pins at one end.
Rugged is a good description of Hornby track, particularly the post war clockwork with level ties.
Graeme