Theresa May has joined a congregation of more than 2,000 people at Westminster Abbey to celebrate the 70th anniversary of the arrival of the Windrush generation in Britain.

Many who travelled from the Caribbean to help rebuild post-war Britain were also attending the commemoration alongside their descendants, to mark the moment hundreds disembarked from the ship Empire Windrush at Tilbury Docks on June 22 1948.

ANNIVERSARY Windrush Journey
(PA Graphics)

The Prime Minister clapped along, smiling and swaying, as a gospel choir sang the lively Jesus Hold My Hand, while actors recounting the story of the Windrush arrived as though they had just stepped off the ship.

Mrs May was joined by Home Secretary Sajid Javid, London Mayor Sadiq Khan and shadow home secretary Diane Abbott, as well as Baroness Lawrence, mother of murdered black teenager Stephen Lawrence.

Windrush anniversary
London Mayor Sadiq Khan arrives for the service of thanksgiving at Westminster Abbey (Victoria Jones/PA)

Liberal Democrat peer and patron of the Windrush Foundation Baroness Benjamin briefly danced in the nave of the Abbey to music being played on steel drums before the service began.

She said she felt “joy”, adding: “I was floating, like a bird, free.”

Windrush anniversay
Jamaican immigrants are welcomed by RAF officials from the Colonial Office after the ex-troopship HMT Empire Windrush landed them at Tilbury (PA)

The congregation was due to hear the world premiere of a specially composed Anthem To Windrush, and celebrant the Very Reverend Dr John Hall, Dean of Westminster, was wearing a robe featuring a photo montage of aspects of black history in Britain since the arrival of Windrush seven decades ago.

The celebrations, however, have been described as “bittersweet” as the fallout continues from a scandal that saw some members of the Windrush wrongly deported and denied access to the NHS, work and housing despite having a legal right to be in the UK.

The Government was funding the church service, while an event was also due to be held at the Essex docks where the landmark nautical journey concluded for the migrants seeking a prosperous future helping to rebuild post-war Britain.

Plans to create an annual Government-backed Windrush Day have been welcomed, but questions remain over compensation for those who have suffered financial setbacks trying to prove their right to residence.

ANNIVERSARY Windrush Passengers
(PA Graphics)

The Home Office has reiterated Mr Javid’s commitment to a compensation scheme and said more than 500 people and organisations have come forward as part of the call for evidence.

Ms Abbott, who has written to Mr Javid, called on the Government to “come clean” about the full extent of the scandal, blamed on the “hostile environment” to immigrants championed by Mrs May when she was in charge at the Home Office.

“Warm words about commemorating the Windrush generation are not enough,” the Labour politician said, adding a call for a hardship fund to help support Windrush citizens.

Labour MP David Lammy, whose Tottenham constituents are among those affected, said British-Caribbeans must be celebrated on the day, but warned the scandal had “left a very nasty taste in the mouth”.

Tilbury Docks
Tilbury Docks was the disembarkation point (John Stillwell/PA)

The Government effort to right the wrongs of the scandal continued this week with a Home Office announcement that Wendy Williams, one of Her Majesty’s Inspectors of Constabulary, and a former Chief Crown Prosecutor, will oversee the Windrush lessons-learned review.

Mr Javid said: “The contribution that the Windrush generation have made to this country is invaluable and I am committed to putting things right.”

More than 2,000 people have been provided documentation since April by the dedicated Windrush taskforce, the Home Office said, helping them to demonstrate their right to residence.

Under the new Windrush scheme, which offers free citizenship for Commonwealth citizens who arrived before 1973 and children who joined their parents before they turned 18, some 285 people have so far been granted citizenship, they added.

So far the Home Office has made contact with 11 people who may have been wrongfully removed from the UK as a result of the fiasco.