I'm not expert - but tried to mockup my garage conversion. I'm going to get a sparky in to do some electrics, but ideally don't want to move the fusebox or change much if possible.

I was going to do the work first before he comes, but getting a bit stuck around the plans for studding above where the window is going to go.

I'm a DIYer but not done much internals before, but keen to learn!

What is the question?

 

Picture close up of CU with flap open might answer more questions, but if it is modern enough to keep, your 2 options are make the studwork deep enough to come forward of the CU and put a door to access it, or make the studwork much less deep and make the existing CU flush mounted where it is 

 

But that all changes if it needs replacing. 

Thanks that’s really helpful! What about the gas pipe? Would you just cover that?