MPS are often accused of talking pants but yesterday they went out of their way to air their enthusiasm for Marks and Spencer's underwear amid serious concerns over the High Street giant's future.

Claire Perry, the Business Minister, revealed she was wearing three items of M&S clothing but, sensibly, declined to declare what they were, before noting how many people tended to buy their "unmentionable items" online due to changing shopping habits.

Later, Labour's Ian Mearns was less discreet, declaring how his "boxer shorts and socks" were from the store, which prompted Commons Leader Andrea Leadsom to reply: "In response to his mention of Marks & Spencer and boxer shorts I'd be tempted to say knickers but,” turning to the Speaker, added: “I'm not sure if you'd rule it out of order."

John Bercow, who said he shared the Minister’s “enthusiasm for Marks & Spencer,” opted to play it safe by declaring that he was wearing an M&S - suit.

The sartorial exchanges punctuated more serious remarks about the planned 100-plus store closures by M&S by 2022 and the potential threat to hundreds of jobs with the SNP's Lisa Cameron, who secured the Urgent Question in the Commons, warning the changes could "devastate town centres".

The MP for East Kilbride, Strathaven and Lesmahagow said she recognised the market was changing but added retail companies needed to "strike a balance" between remaining competitive and understanding the wider implications of closing "landmark" stores.

Ms Perry said the M&S plan had been well advertised and was designed to help the chain compete with online retailers.

She pointed out staff were being consulted about redeployment to other stores, telling MPs: "All of us should think it is a worrying time for the over 600 staff members who are currently going through that process.

"I know there will be concern on all sides of the House about this and the Government will of course stand by with the Department for Work and Pensions and Jobcentre Plus to work with the company should support be required," added the minister.