The Home Office is being sued for alleged breach of the Brexit withdrawal agreement after stripping almost 1,500 EU citizens of their full rights to live in the UK.

Campaign group the3million lodged papers at the high court on Friday after several cases emerged of EU citizens who were granted pre-settled status to remain in the country after Brexit but were told recently those decisions were an “error”.

According to the statement of claim, the Home Office decision to remove all or some rights from citizens granted pre-settled status was made without “procedural protections” required under the Brexit withdrawal agreement (WA).

These protections include a right of an appeal and an assessment of “proportionality”, which would establish whether removal of rights was appropriate given the EU citizens in question built their lives in the UK on the basis of the Home Office’s original decision.

Among the people affected by the Home Office policy was a 33-year-old Brazilian Italian engineer who has been in London…