The same thing happened to me. It got wet and caught fire. Managed to disconnect the battery and put out the fire just in time. Such a crappy design.also I had my side mirrors switch melt I need a new plug/ cable for it, anyone got a plug for sale? View attachment 218823
The Phase 2 in the UK did not get and interior upgrade like yours so if you find a phase 2 in the UK it will have a slightly different switch.
These switches were fairly generic, I believe the Clio and then early Megane used the same.
Plenty on eBay from the continent but then you will need to pay import tax.
I’d suggest looking on eBay for Renaults of the similar age. Something like this might work: