The Grid plan for future pylons has just been published under the name Distribution Future Energy Scenarios (DFES). National Grid owns the wires and has proposed plans to grow up to 2050, fitting the document last year from ESO which transitioned to NESO (National Energy System Operator). The new plan takes into account 120 local authorities plus major industries and businesses, while integrating 8000 local projects in train.
If UK went fully electric, the Grid would have to expand by a factor around 5, which is a daunting, probably impossible, target. Surely, there are people around who would like the Grid to get smaller, because our UK electricity prices are the biggest in the world, inhibiting growth of UK as a manufacturing nation. Prices need to drop by a factor 5 before the grid expands by this ludicrous factor 5.