Speed humps which have been described as “insanely high” will be lowered after shoppers and councillors staged a protest.

Drivers say the sleeping policemen, in Borehamwood Retail Park, in Theobold Street, have damaged their vehicles.

But after a series of complaints, the park agreed to reduce one of them to make it easier for some cars to drive safely over them.

Jessica Fincham, 32, said the underside of her black Vauxhall Corsa was scraped by the offending bump last week.

The mother-of-three said: “It’s really put me off from going there and I was so angry when my car was damaged, especially since I’m not even a fast driver. It put me off from going back.

“I can’t understand how these were allowed to be installed in the first place, they are insanely high. It’s like there’s mini-mountains in the middle of a shopping park.

“I’m relieved they are making it smaller, but I only hope it’s enough to make a difference.”

The humps were installed to encourage people to slow down when entering the shopping park.

Ms Fincham added: “I understand that it’s important to reduce speeds, especially in a place that’s overrun with people and where children and people with buggies regularly cross, but this is just too much.”

Natalie Kaye, 26, who works in Borehamwood, said: “The humps are ridiculous, I can’t understand why they were allowed install them so high.

“They are so bad for cars so it’s not a surprise that people are complaining.”

Ross Sweeney agreed they make you slow down – but for the wrong reasons.

He said: “They definitely make you slow down, otherwise you lose the bottom of your car and the suspension, too.”

A statement from Borehamwood Retail Park said: "Due to concerns raised by the landlord and council over the speed of vehicles within Borehamwood Retail Park, we have installed speed humps as a traffic calming measure. This will improve safety for road users.

"Speed restriction signs together with road markings are due to be installed to further warn drivers to reduce their speed on approach of the speed bumps.

"We are also taking measures to reduce one of the speedbumps slightly, to make it easier for some cars to drive safely over them."