Important decisions could be taken without Trafford Council’s agreement if controversial power-sharing plans go ahead, the borough’s political leader has warned.

Councillor Matthew Colledge fears plans to unite the 10 Greater Manchester authorities in a new partnership could take decision-making powers out of Trafford Council’s hands, even when handling controversial matters.

Trafford and Stockport caused a political bust-up after abstaining from a vote which would lead to the formation of Greater Manchester Combined Authority, which would have a joint policy on transport, skills and economic development.

Councillor Colledge said: "It’s really about ensuring our sovereignty is protected."

Pointing to the defeated congestion charge plans, fiercely opposed by Trafford’s Tory council, he added: "Ultimately, the people made the decision due to the referendum vote.

"Yet, had it not been the case, seven out of 10 councils would have had to be in favour of the decision.

"Under the new plans it would have been six, which would have made it harder to oppose that plan."

He is also concerned about how councils could leave the new partnership.

Trafford is currently part of the Association of Greater Manchester Authorities.

But this voluntary body would be beefed up into a combined authority that could make decisions binding on all members.

Urging Trafford to back the plan, Manchester Council leader Sir Richard Leese said: "It’s time for authorities to decide whether they take part in this or not."

Trafford will make its decision at the full council meeting on March 17.