Poor power in the house

Just moved house and had the electrician come and redo the fuse board and give an overall inspection of the house.

Its ok for normal stuff but my setup - Rega Brio and Planar 3 could do some a nicer supply.

Just wondering what I should be looking at, I see a lot of conversations about power supplies and cables but a bit lost on what I should be looking at.

The power in the house not the power coming to the house

Was thinking of getting the Rega Power cord and the TT PSU, but open to other suggestions, I am based in the UK too.

Thanks