British Gas breaks into property over unpaid bill: but there's no gas

Stephanie MacDonald-Walker returned home from work to discover that a British Gas engineer had broken into her house. He had tried to fit a gas pre-payment meter, but discovered that there was no gas supply to the flat, so left a number and asked her to call. Shockingly, this was something she had called to tell the company about a month earlier.

So what happened, and does an energy company really have the right to break in?
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