MrMan wrote in :

I have a cooker switch that I never use as we always have gas cookers.
I was wondering if I could convert the obsolete cooker circuit to a
power outlet, maybe a single socket. The cooker circuit is wired in 6mm
and into a 32a breaker. Would I need to change the breaker at all?

You probably should try to find a UK-specific group to post this question in. Most of the people
in this group live in the US or Canada. American and Canadian wiring practices and electrical
codes are very similar to each other -- and very different to yours.