The campaign, launched under the slogan "You Are at Home. Vote!” aims to encourage greater engagement in local affairs, including decisions made by municipal authorities.
"Take responsibility for the place where you live; you have an impact on how you live, what changes around you and what you expect from local authorities," Marta Tatol of the organisation told public broadcaster Polish Radio's correspondent in London.
"There are many Poles here, so we also have real influence," she said.
The group said interest among Poles in local issues has been growing in recent years, particularly among those who have lived in the UK long term.
"Every vote counts because we create our everyday reality and the community we live in," Tatol said, adding that while some Poles stay in Britain only temporarily, many others have settled and want a say in their surroundings.
Polish citizens living in Britain are eligible to vote in local elections if they have settled or pre-settled status and are registered to vote, Polish Radio’s IAR news agency reported.
On Thursday, voters across the UK headed to the polls to elect about 5,000 councillors across 136 local authorities and six mayors in parts of England, as well as members of the Scottish and Welsh parliaments, according to the BBC.
The vote was expected to bring gains for the right-wing Reform UK party and the left-wing Green Party, while the governing centre-left Labour Party faced potential losses, adding pressure on Prime Minister Keir Starmer.