The mother of murdered teacher Jane Longhurst has called for a TV advert which mirrors her daughter's last moments to be taken off-air.

The Big Yellow Storage Company's commercial shows a woman luring her unwitting boyfriend into a unit, where she traps him before driving away.

The company's warehouse in Coombe Road, Brighton, was used by Graham Coutts to store Jane's body for three weeks after he killed her.

Jane's mother, Liz, 72, said: "It is insensitive. Do it in a year's time but not now. I'm very surprised they didn't remove it after the trial. I'd like this to be taken off the air."

In the advertisement, a couple struggle with their belongings towards one of the company's storage units.

The woman becomes increasingly annoyed with her partner's conversation as he unloads their possessions.

She watches him from outside the unit as he enthuses: "Imagine what you can store in here." Then she locks him in and walks off.

Coutts, 35, hid Jane's body for 24 days at the unit after strangling her at his flat in Waterloo Street, Hove, in March last year.

He used the false name Paul Kelly and paid £76.32 for a 5ft-wide unit to store what he said were personal belongings.

He visited Jane's body at the warehouse ten times but staff noticed the smell and Coutts was forced to move her.

He removed the trunk containing her body to Wiggonholt Common, near Pulborough, and set it alight.

Claire Burchell, of Dewe Road, Brighton, was also appalled at the ad.

She said: "I sat in stony silence as this advert portrayed a couple showing how easy it is to store their wares and the wife then stores her husband in the metal container.

"In light of Jane Longhurst's appalling murder it was in extremely bad taste."

A spokesman said the company had sealed off unit C50 - where Jane's body was hidden - as a mark of respect but there were no plans to cancel the advertisement.

He added: "This commercial was made in 2002 and designed to be light-hearted and show how our facilities can be used.

"We could never have anticipated the tragic events of the last months. We deeply regret anyone should be offended."

Coutts was jailed for life after being found guilty of Jane's murder last week.

The campaign to close hardcore internet sex sites was today gathering force at Westminster after winning the backing of scores of MPs.

Yesterday, the Argus revealed Labour MPs had tabled an Early Day Motion in the wake of the brutal murder of Jane Longhurst.

A second Early Day Motion has been put down today by Liberal Democrat and Conservative MPs, led by East Worthing and Shoreham's Tim Loughton and Lewes's Norman Baker.

The Lib Dems and Tories have also added their names to the Labour call for the law to be tightened - taking the total number of signatories to 107.

MPs want ministers to review the Obscene Publications Act so hardcore sites promoting necrophilia and violence will be closed down or filtered.

Coutts visited violent sex sites to satisfy his sexual fantasies before murdering Jane.