I remember the Smiths autopilot controller in the Victor Mk2 had a LOC engage switch which could also be rotated to the L Cable setting. We knew that it was for an early autoland system, but no-one on the fleet had ever used it. Not that the leader cables were in existance then.
I recall an "I learned about flying from that" story in Air Clues from the 80s submitted by a Canberra pilot who was diverting from a midlands airfield after the weather got bad. On the way to the alternate, he was passed to Bedford Approach on the way to his diversion destination. He heard a callsign in the radar circuit staing that he was going to do an ILS to roll (touch and go). Obviously, the weather at Bedford was better than our hero though, so he changed his destination and asked for vectors to the ILS. The other aircrat rolled in front of him, so he was suprised that he didn't see the lights at 200'. He was fed in again and had to go round a second time despite the other aircraft doing another roller. Now he was desparate. He had to land off the next approach or jump out. So he flew past minimums and got the lights in the flare. He taxied in with difficulty, shut down on fumes just as the other aircraft taxied past. It was a Varsity with the words "Blind Landing Experimental Unit" written on the side!