I suspect, although I haven't checked, that rather than the brake light still not working it is actually permanently on. I broke a spade connector off the original and fitted the new one which had arrived the day after the issues started, initially after I broke the connector the brake light still worked off the foot brake, then nothing during the issue. Now I, thinking about it, I suspect I've managed to fit the microswitch with the plunged wedged in the light on position. I'll check it out later.
All was good when I went for a 40 mile spin yesterday, briefly had no neutral light, other than that it was fine.