Practice amplifier for electric guitar (Bishopsworth BS13)

15 watt practice amplifier for guitar looking for new home. Fairly old so a bit battered around edges, but just cosmetic - it is solid still.

In working order, it just doesn't seem to want to produce a clean tone, even with the gain control turned right down. It might just need the pots cleaning, or maybe replacing. Someone with better electronics knowledge than me would probably sort it out. Alternatively if you are happy with permanent overdrive sound then it's fine too!

NB - not PAT tested.

Let me know if interested, Duncan