SNP and Labour MPs have called on Theresa May to visit asylum seekers’ accommodation in Glasgow, following allegations vulnerable people are being housed in "horrific" conditions.

In her six years as Home Secretary the Prime Minister did not inspect any of the properties used across the UK.

Now members of the Commons Home Affairs Select Committee have urged her to make the journey before a multi-million pound contract is extended.

Earlier this year Serco, which holds the contract, admitted that allegations 40 people had had to share a kitchen in Glasgow's Tartan Lodge hostel were "substantially correct".

It said it had been unable to investigate claims that staff taunted asylum seekers with handcuffs and threats of deportation, but rejected reports of accommodation with bloodspattered walls, saying that the substance had been fruit juice.

Serco says that its 1,860 Glasgow properties meet Home Office standards and are among some of the most heavily inspected in the sector.

But SNP MP and member of the committee Stuart McDonald said that Mrs May could not “justify making any decision without a full and comprehensive review of what's going wrong with asylum accommodation”.

His call was backed by the chair of the committee Labour MP Keith Vaz, who earlier this year described conditions in Glasgow as "horrific" and the worst in the UK.

Mr McDonald said: “She should still make that visit, whether to Glasgow or elsewhere - and take the new Home Secretary or immigration minister with her - because very soon the government will have to make a decision on whether those contracts should be extended. She cannot possibly justify making any decision without a full and comprehensive review of what's going wrong with asylum accommodation.

“How destitute asylum seekers are treated will say a lot about whether her government will live up to her rhetoric."

Mr Vaz said: “I’m not her diary manager, but I would certainly think she should visit asylum accommodation in between her visits to European capitals."

When he visited Glasgow earlier this year to investigate the allegations for himself Mr Vaz was forced to give one man £5 to buy a lightbulb for his bedroom.

The man had been using his bathroom light to read his book in the evenings.

In evidence to the committee, Mrs May conceded that while she had been to a range of Home Office facilities she had had not visited asylum accommodation.

Last night a spokesman for No 10 said that it could not comment on Prime Ministerial visits.

The committee has also called on ministers to encourage cities and regions across the UK to do more to ensure a "fair distribution of asylum seekers throughout the country".