regarding the 10mmDoes it look like 10mm?
Can you point me in the direction of what it should have please? I'm conscious I'm just a punter and not talking anyone's language here, but thanks for all you patience and input.333rocky333 said:looks like 1 main earth
4 circuit earths and 3 ring earths (two in each)
no sign of any bonding wires in there
From where it connects to the 40 amp mcb you can tell better.
Compared to the cable to the right it looks either 6 or 10.
but that is coz we cannot tell if the tails , the fat wire in the main switch to the right is 16 or 25.
regarding the bonding
As others say there should be at least two green / yellow 10 mm cables either in that board or nearby.
They should be just smaller than the big g/y cable at the top left of the board.
Normally going in them terminals marked B and B.
They sometimes terminate outside the board in a copper bar,called the MET (main earthing terminal)
One to gas and one to the water.
Look near the meter and stopcock , if you have bonds you will see the other ends there.
The big green and yellow you have in the board may be just the other end of the one on the clamp below.