https://red-bag.com/design-standards/370-bn-ds-e09-earthing-of-electrical-installations.html#earthing

"5. Dividing Points

Dividing points shall be provided where necessary, but each earthing point shall be terminated at a dividing point.

Dividing points shall normally be 50 x 6 mm copper bar and made suitable to receive the connections: from the earthing point, the main loop and the possible earthing conductors to equipment (see detail 10 of BN-DS-E7)

Note : Disconnection the earthing point may not disturb the other connections."