[9] In October 2016, Open Britain launched a 'Write to Remain' letter-writing campaign directed at Theresa May asking her to guarantee the right of EU nationals to stay in the UK.

[10] The individuals involved in the campaign group include former Ministers Pat McFadden (Labour) and Norman Lamb (Liberal Democrat).

[13][14] In October 2019, shortly before the 2019 general election, CEO James McGrory was forced out[2] of People's Vote and Open Britain.

As the lead organisation behind the People's Vote campaign, this led to a major staff walkout in protest at Roland Rudd's, the Chairperson's, actions.

In 2022 Open Britain began a campaign called 'Stop The Rot' promising "Enough is Enough - Johnson Must Go Join the #StopTheRot Summer of Action".[15][better source needed].