The fire, at Telford Bridge Retail Park, was already out when firefighters arrived at around 5.20pm on Wednesday night.

But Western Power Distribution said it had created a fault that was reported at 5.13pm, and which led to blackouts for 626 customers.

Power was restored to most homes within half an hour of the incident, but more than 100 customers were left without electricity for more than 60 minutes.

A spokesperson for the Western Power Distribution, said: "432 customers were back on on in 29 minutes, while power was restored to the remaining homes at 6.18pm after an hour and four minutes."