Amber Rudd is under renewed pressure to resign after denying the Home Office imposed targets for the number of people it wants its enforcement teams to deport – only for a report to appear to contradict her.

The Home Secretary will have to explain herself to Parliament after being summoned by Labour to answer an urgent question on the issue.

Questioned about the Windrush scandal on Tuesday, the Ms Rudd had told MPs on a powerful parliamentary committee that there were no targets for deportations, adding: “That’s not how we operate”.

But questions were raised about her evidence to the Home Affairs Committee after a government document from 2015 emerged showing that targets for "voluntary" deportations did exist.

Ms Rudd’s claims also contradicted evidence given to the same committee by representatives of immigration staff, who insisted employees are given targets for how many people they should deport.

Lucy Moreton, general secretary of the Immigration Service Union, told the MPs the Home Office had set a “net removals target that enforcement teams have to meet, so they are aiming to remove a certain number of individuals in any given month".

Asked about this, Ms Rudd said: "We don't have targets for removals.

"I didn't hear the testimony, I'm not sure what shape that might be in. If you ask me, 'are there numbers of people we expect to be removed?', that's not how we operate.

"I do think it is right... where there are people here illegally that we do try to remove them."

The Home Secretary faced fresh pressure after the emergence of a 2015 report by the Chief Inspector of Borders and Immigration that appeared to confirm Ms Moreton’s claims.

Windrush generation: threat of deportation from UK Show all 15 1 /15 Windrush generation: threat of deportation from UK Windrush generation: threat of deportation from UK The ex-troopship 'Empire Windrush' arriving at Tilbury Docks from Jamaica, with 482 Jamaicans on board, emigrating to Britain. Getty Windrush generation: threat of deportation from UK Jamaican immigrants being welcomed by RAF officials from the Colonial Office after the ex-troopship 'Empire Windrush' landed them at Tilbury. PA Windrush generation: threat of deportation from UK Alford Gardner who arrived in Britain in 1948 on the first Windrush ship to dock in Tilbury, Essex, speaking at his home in Leeds PA Windrush generation: threat of deportation from UK Alford Gardner in Leeds shortly after he arrived in Britain in 1948 on the first Windrush ship to dock in Tilbury, Essex PA Windrush generation: threat of deportation from UK Gardner was 22 years old when he boarded the ship in Kingston, Jamaica, with his brother Gladstone before they and hundreds of Caribbean migrants called on to rebuild post-war Britain disembarked the ship in Tilbury Docks PA Windrush generation: threat of deportation from UK Alford Gardner (right), during his RAF service in 1947 PA Windrush generation: threat of deportation from UK The son of Ruth Williams, a Windrush-generation immigrant, wants to the leave the country after threats of deportation. According to his mother, Mr Haynes applied for British citizenship in 2016 but was rejected, despite Ms Williams having lived in the UK almost permanently since arriving from St Vincent and the Grenadines in 1959. Ruth Williams, 75, said she felt "betrayed" by Britain after the Home Office twice turned down applications for her 35-year-old son, Mozi Haynes, to remain in the country. Ms Williams is understood to have cancer and said she relies heavily on her son for support. PA Windrush generation: threat of deportation from UK The British liner 'Empire Windrush' at port in 1954. Getty Windrush generation: threat of deportation from UK Ruth Williams, 75, with her British passport. "I feel betrayed and a second class citizen in my own country," she said. "This makes me so sad and the Home Office must show some compassion. "I am unwell and almost 75, I live on my own and I need my son to stay here. I need my family around me and I can’t face being alone. He has applied to the Home Office and been refused twice." PA Windrush generation: threat of deportation from UK From the top, hopeful Jamaican boxers Charles Smith, Ten Ansel, Essi Reid, John Hazel, Boy Solas and manager Mortimer Martin arrive at Tilbury on the Empire Windrush in the hope of finding work in Britain. Getty Windrush generation: threat of deportation from UK Jamaicans reading a newspaper whilst on board the ex-troopship 'Empire Windrush' bound for Tilbury docks in Essex. Getty Windrush generation: threat of deportation from UK After half a century in Britain, Anthony Bryan decided it was time to go abroad. But the decision set off a nightmare that saw him lose his job, detained twice and almost deported to Jamaica. AFP/Getty Windrush generation: threat of deportation from UK Jamaica-born Anthony Bryan poses outside his home in Edmonton, north London. Now 60 and a grandfather, Bryan thought the issue could be resolved swiftly, as he legally moved to Britain with his family as part of the Windrush generation of Caribbean migrants after World War II. In 1948, the ship Windrush brought the first group of migrants from the West Indies to help rebuild post-war Britain, and many others followed from around the Commonwealth. A 1971 law gave them indefinite leave to remain, but many never formalised their status, often because they were children who came over on their parents' passports and then never applied for their own. AFP/Getty Windrush generation: threat of deportation from UK Three Jamaican immigrants (left to right) John Hazel, a 21-year-old boxer, Harold Wilmot, 32, and John Richards, a 22-year-old carpenter, arriving at Tilbury on board the ex-troopship 'Empire Windrush', smartly dressed in zoot suits and trilby hats. Getty Windrush generation: threat of deportation from UK Newly arrived Jamaican immigrants on board the 'Empire Windrush' at Tilbury in 1948. Getty

According to the document, in 2015-16 the Home Office asked its 19 enforcement teams across the UK to aim for 12,000 "voluntary" departures of people with no legal right to remain in the country.

Ms Rudd’s apparent confusion over whether her department imposed targets led the committee chair, Labour MP Yvette Cooper, to demand the issue be “cleared up” immediately.

The Home Secretary promised to “certainly take a look” at Ms Moreton's claims that enforcement teams are working to specific targets.

The Home Office later said it had never been government policy to take decisions arbitrarily to meet a target, but did not deny that targets existed.

The culture secretary, Matt Hancock, also refused to deny that enforcement teams were given targets.

He told the BBC Radio 4 Today programme: “As far as I understand it, it has never been Home Office policy to take decisions arbitrarily to meet the target.