What would you suggest to fix this?

What shall I do to fix this without re tiling ?

If there are no others on the same wall at the same height, I would move them up and left and all close together. That leaves some simpler cuts to the right and below.

al strachan said:

If there are no others on the same wall at the same height, I would move them up and left and all close together. That leaves some simpler cuts to the right and below.

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So this is not my tiling iv been asked to try rectify but the guy has tiled all the kitchen the same on the other side the slither is above the socket on the pic above the two tiles either side the socket are cut tiles so even if I remove those and manage to cut the slither right angles the top of the socket won't be fixed to anything and most probs the right angles will crack soon as tightened

is it a stud wall or solid? Stud is easy, since you could easily move/spread out the sockets.

I'm a qualified sparky, but a mere DIY tiler, so i've seen my fair share. Job looks badly set out. A shorter bottom tile by a few MM would have made this so much easier, and i'm assuming that the proffesionals make the height of the sockets one of the main considerations for setting out also.

I see your "tiler" has just cut the left and right tiles short also. terrible!!

one options would be to either move the sockets/spread out to suit the tiling, remove the left/right tile and make some easier cuts (with some electrical work)

another (and not so good for any following sparks) is to tile ontop of the flange of the electric patress boxes slightly. it buries the boxes, but gives you bigger cuts.

Also if you use dry linging electrical boxes, so long as the tile is well adhered to the wall, i've never had a broken tile, even with the smallest of cuts, and the lugs of dry linging boxes can grip tiles on threir own very well and securely.