Possibly, but the power cable from the house to the garage is (or at least was) a continuous one (i.e. no joints/junctions) and a quick check with a neon "continuity/polarity checker" plug some months ago showed no issue, and neither has the RCBO in the garage been spontaneously "tripping. HoweverI wasn’t suggesting the hardware in the garage was at fault,I remember spending an extraordinary amount of time waiting while the garage camera to be recognised by the network and we both suspected the shared mains wiring under the ground was at fault.
Only had a couple of "sprinklings" here, a few miles North of you.Finally, the heavens have opened. Too late for a couple of trees in the garden though , one apple tree is stone dead and the horse chestnut has fruit, but no green leaves at all.
A rumble of thunder every two minutes as well.
Yuh, been having sprinklings for a few days - but nothing "serious" for some timeYou had similar a few days ago,