A group of British lawmakers yesterday urged the government to take tougher action against China over its treatment of minority groups, including a partial Winter Olympics boycott and cotton trade ban.

In a report following a months-long inquiry, parliament's foreign affairs committee recommended exploring the feasibility of an International Criminal Court probe into the alleged crimes against Uyghur Muslims and others in the northwestern Chinese region of Xinjiang.

It also called on the government to accept MPs' view -- expressed in a symbolic April vote -- that minority groups there are suffering genocide and crimes against humanity, and take stronger action "to bring these crimes to an end".

The cross-party group wants Britain to use every diplomatic lever to pressure Beijing to allow international observers -- in particular the United Nations High Commissioner for Human Rights -- access to Xinjiang.

It also backs a fast-track asylum process for those fleeing persecution in the region, forming a coalition of "sanctuary states" with Western allies.

"It's time for big boy politics," committee member Alicia Kearns said ahead of the report's release.

"We are the mother of all parliaments. If we are not willing to speak up for those who others seek to silence, then what parliament's going to do it?"

Rights groups believe at least one million Uyghurs and other mostly Muslim minorities have been incarcerated in camps in Xinjiang, where China is also accused of forcibly sterilising women and imposing forced labour.

Beijing has denied all allegations of abuses and has insisted its policies in Xinjiang are necessary to counter violent extremism.

But in their 37-page report -- "Never Again: The UK's Responsibility to Act on Atrocities in Xinjiang and Beyond" -- the British MPs argue the "truly horrifying" crimes taking place are "an international call to action".

Among the raft of recommended responses, it urges Prime Minister Boris Johnson's government to ensure that Beijing "faces consequences" when it hosts the 2022 Winter Olympics.

The committee wants ministers and dignitaries to skip the opening and closing ceremonies, discourage British businesses from sponsoring or advertising at the event, and encourage fans and tourists to stay away.