A 27-year-old woman driver four times over the limit failed to notice who was parked beside her at a petrol station forecourt.

A police car.

And the officers may not have given her a second thought except for one fairly obvious movement.

She “staggered out of her vehicle,” they reported later.

And, “concerned” about her, they did the next best thing – offered her a breathalyser test.

Which she failed spectacularly.

“She blew a reading of 151,” said a Facebook post by Cambridgeshire Police. “The legal limit is 35, meaning she was more than four times over the legal limit.”

Their post added: “Needless to say, she was arrested and spent the night in custody.”

The woman was arrested at a fuel station forecourt in Brampton on October 20.

Facebook posts offered her little respite.

“A figure that high, I bet they smelt the alcohol on her without getting out their car,” said one post.

“Throw the book at her she is a danger to innocent people.”

Another wrote: “Absolutely no consideration for other people’s safety…. lock her up.”