My back light failed last night so I ordered a replacement pair (back + front) which are due to arrive this afternoon***. That will leave me with a backup front light.
The new lights are the same type that I bought a month ago for my Devon bike. They are cheap, but are bright enough for the lit roads that I will use them on, and they look well made. TBH though, if they pack up after a couple of years use that would be okay, except for being more electrical waste to recycle.
*** They arrived on time!