Emily Thornberry, the Shadow Foreign Secretary, has indicated Labour will not attempt to block Brexit, even if they party’s amendments do not get accepted in the Commons this week.

Her comments come as Labour braces itself for a fresh rebellion this week as MPs vote again on Article 50 – the mechanism for triggering the Brexit negotiations. Clive Lewis, the Shadow Business Secretary, has hinted he could resign from his post if Labour’s demands are not met.

It follows a vote last week, in which three members of the Shadow Cabinet resigned in order to vote against the Government’s EU Withdrawal Bill. Three party whips and around ten junior frontbenchers also defied the leadership but whether they will remain in their roles is yet to be decided.

Speaking on the BBC’s Andrew Marr Show, Ms Thornberry said: “We have said that we will not frustrate Brexit. We have got our instructions from the British people. We are democrats and the public have voted to leave the European Union.

“There are going to be negotiations happening in the next week. There are many ways in which the Government may be able to react to this that will be positive.

“On one of the amendments we have put down they may say: ‘We’re not going to support this amendment but during a speech we can give an assurance, we can speak in back channels, we can say you will get this.’

“There will need to be back channels, private conversations. There are many conversations going on now. We are speaking to Government, we are speaking to Tory backbenchers and we are trying to get a compromise that will work.”

Ms Thornberry refused to be drawn on whether the Shadow Home Secretary, Diane Abbott – who infuriated many Labour MPs when she missed last week’s vote because she said she had migraine – would face the sack if she failed to support the bill in Wednesday’s final third reading vote.

“It is a fast-moving picture. Let’s see what happens,” she said. “The whip will be decided next week. Let’s see what happens in relation to the amendments. We have a Shadow Cabinet meeting next week. It will be for the chief whip and the leader to decide what the whip is.”

Last week John Mann, a Labour MP, called for his colleague Ms Abbott to resign and apologise for missing the historic vote. “I think we all know what’s going on here,” he said. “She bottled the vote. It’s cowardice.”

How Brexit affected Britain's favourite foods from Weetabix to Marmite Show all 8 1 /8 How Brexit affected Britain's favourite foods from Weetabix to Marmite How Brexit affected Britain's favourite foods from Weetabix to Marmite Weetabix Chief executive of Weetabix Giles Turrell has warned that the price of one of the nation’s favourite breakfast are likely to go up this year by low-single digits in percentage terms. Reuters How Brexit affected Britain's favourite foods from Weetabix to Marmite Nescafé The cost of a 100g jar of Nescafé Original at Sainsbury’s has gone up 40p from £2.75 to £3.15 – a 14 per cent rise—since the Brexit vote. PA How Brexit affected Britain's favourite foods from Weetabix to Marmite Freddo When contacted by The Independent this month, a Mondelez spokesperson declined to discuss specific brands but confirmed that there would be "selective" price increases across its range despite the American multi-national confectionery giant reporting profits of $548m (£450m) in its last three-month financial period. Mondelez, which bought Cadbury in 2010, said rising commodity costs combined with the slump in the value of the pound had made its products more expensive to make. Cadbury How Brexit affected Britain's favourite foods from Weetabix to Marmite Mr Kipling cakes Premier Foods, the maker of Mr Kipling and Bisto gravy, said that it was considering price rises on a case-by-case basis Reuters How Brexit affected Britain's favourite foods from Weetabix to Marmite Walkers Crisps Walkers, owned by US giant PepsiCo, said "the weakened value of the pound" is affecting the import cost of some of its materials. A Walkers spokesman told the Press Association that a 32g standard bag was set to increase from 50p to 55p, and the larger grab bag from 75p to 80p. Getty How Brexit affected Britain's favourite foods from Weetabix to Marmite Marmite Tesco removed Marmite and other Unilever household brand from its website last October, after the manufacturer tried to raise its prices by about 10 per cent owing to sterling’s slump. Tesco and Unilever resolved their argument, but the price of Marmite has increased in UK supermarkets with the grocer reporting a 250g jar of Marmite will now cost Morrisons’ customers £2.64 - an increase of 12.5 per cent. Rex How Brexit affected Britain's favourite foods from Weetabix to Marmite Toblerone Toblerone came under fire in November after it increased the space between the distinctive triangles of its bars. Mondelez International, the company which makes the product, said the change was made due to price rises in recent months. Pixabay How Brexit affected Britain's favourite foods from Weetabix to Marmite Maltesers Maltesers, billed as the “lighter way to enjoy chocolate”, have also shrunk in size. Mars, which owns the brand, has reduced its pouch weight by 15 per cent. Mars said rising costs mean it had to make the unenviable decision between increasing its prices or reducing the weight of its Malteser packs. iStockphoto

Ms Thornberry, the MP for Islington South, also repeated Labour’s call to urge the Government to guarantee the rights of EU nationals currently residing in the UK. She added that some foreign nationals had come to hear constituency surgery “in tears”.

“The government may be saying they won't deport, but I've had people coming to my surgery in tears,” she added. “I had a meeting of 200 French nationals, not from my constituency, saying they are extremely concerned about their future.