Lancaster councillors are part of a new alliance formed as a "strong voice of opposition and challenge" to Reform UK.
County Councillors Gina Dowding, Hamish Mills and Paul Stubbins of the Green party have joined the newly-formed Progressive Lancashire Group on Lancashire County Council.
The group is also made up of a Green county councillor from Accrington, and seven councillors who were elected as Independents from county divisions in Preston, Burnley and Pendle.
Independent County Councillor Azhar Ali from Pendle will be the leader of the group and County Councillor Dowding will be the deputy leader.
County Councillor Dowding said: “As well as challenging Reform, we will make positive recommendations to budget and policy proposals and push for openness and transparency by the administration.
"Our priority is to empower and support our communities to be resilient in the face of the cost of living crisis. This includes in energy security, quality training and employment opportunities, reliable public transport, and affordable housing."
County Councillor Ali said: “The purpose of Progressive Lancashire – made up of Independent and Green councillors - is to be an effective and constructive opposition group to hold the leadership of the County Council to account on matters which affect residents across Lancashire.
‘We will provide strong challenge to Reform where required but also ensure that we work collaboratively with the leadership as the official opposition group on the County Council."
The two groups will maintain their respective groups’ identities whilst working together as Progressive Lancashire.
The 11 members of the group are Gina Dowding - Lancaster Central, Hamish Mills - Lancaster South East, Paul Stubbins - Lancaster East, Azhar Ali - Nelson East, Usman Arif - Burnley North East, Mohammed Iqbal - Brierfield & Nelson West, Maheen Kamran - Burnley Central East, Michael Lavalette - Preston Central East. Yousuf Motala - Preston City, Almas Razakazi - Preston South East, Sohail Asghar - Accrington West & Oswaldtwistle Central.
Earlier this week, County Councillor Stephen Atkinson was elected as the leader of the Reform UK group on the council, which holds the majority of seats following the election on May 1.
County Councillor Atkinson is expected to become the next leader of the county council, at a meeting on May 22.
Reform won 53 of 84 available seats at the Lancashire County Council elections earlier this month, including seven out of 10 in the Lancaster and Morecambe District.
Gary Kniveton, Brian Moore, Graeme Austin, Graham Dalton, Russell Walsh, Shaun Cummins and Martyn Sutton were all elected to the county council.
The result was echoed across Lancashire as Reform won overall control of the county council from the Conservatives.
The previous majority party were reduced from 46 seats to eight and Labour went down to just five seats in the county.
The other three seats locally were won by the Greens, increasing their number of overall seats on the county council to four.
County Councillor Dowding was re-elected, with County Councillors Mills and Stubbins elected to the county council for the first time.
The Liberal Democrats have five seats on the county council. There are four independents, three councillors not specified and two representing Our West Lancashire.
Lancashire County Council Conservatives, reacting to the formation of Progressive Lancashire, said it was "everything that is wrong with politics at the moment", "further breeds the distrust that populists are currently feeding upon" and is "undemocratic, it is wrong and those involved should be ashamed".
They said the deal was to "prevent the Conservatives taking their rightful place as the largest opposition group at Lancashire County Council".
"How the Green Party or an assorted collection of Independents, even when combined can claim to be the democratically elected opposition stretches credibility somewhat to say the least," said a spokesperson for Lancashire County Council Conservatives.
Read more: Next leader of Lancashire County Council announced - Beyond Radio
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