Yes! (Well, near enough). Frank Wyatt Prentice (a US citizen at that time living in Toronto) patented a "wireless signalling system" which LSWR tried out on the Hampton Court branch in 1911. It used radio transmission (then called "Herzian waves") from a cable laid between the rails with a "coherer" (early radio signal detector) on the locomotive. The coherer energised a relay which showed a green light in the cab to the driver. if the coherer wasn't receiving a signal, a red light was shown and the emergency brake was applied. Connect the radio transmitter to the interlocking so that it is only energised when the line ahead is clear and Bob's your uncle! It obviously had problems because the LSWR (and various US railroads which tried it) dropped it quickly. My guess is that discrimination between adjacent tracks and between one block and the next might have been a problem, as well as the fact that the whole kit would have been highly unreliable and probably subject to interference from any local radio ham. I haven't managed to find a copy of the patent yet - that might reveal more.Radio signalling/AWS
Here's a few guesses:
North Eastern; South Eastern; London, Chatham and Dover; London & South Western; Glasgow Suburban Railway (or whatever it was called then?); Merseyrail (or whatever it was called then?); Great Central (Woodhead Tunnel route).
There are a few "not-sure" outfits: counting as "railway"; or tram, and / or too footling-and-silly to pass muster? I'll tentatively suggest, Volk's Electric Railway at Brighton -- but wonder whether for this question, it is seen as in the footling-and-silly pile.
... I was meaning normal pre-grouping railway companies
LLundudno & Colwyn Bay
Manchester, Glossop & Hyde
Manchester - Altricham
Euston to Watford
Hythe Pier Railway
Southend Pier Railway
Yes, correct, that brings total to 9
Lets see if anyone else can think of the others, they are all standard gauge