Parents have been left in the dark and unable to plan ahead after backers of a new free school refused to say where it would be located.

Chapel Street Community Trust won a bid to fund a new primary school on the Kingston and Merton borough border in May, but has gone quiet about site plans.

The Department for Education also refused to reveal where the school would be located, but insisted it was still due to open by September 2014.

It is understood Park Community School will serve schoolchildren from Motspur Park, Raynes Park and West Wimbledon.

But, with parents already considering where to send their children next year, councillor David Ryder-Mills, lead member for schools and continuing education, said: “It is absolutely frustrating. We have the responsibility to provide an adequate number of school places, but we have no control over the schools.

“I know of a site which they have in mind, but I am not aware that is public information. It would be good to have confirmation soon, but free schools are free of local authority control.”

Chapel Street Community Trust’s Richard Colbrook, parent liaison manager for the school, said: “Already there is an air of excited expectation from local communities about the school.

“While we understand that it is frustrating for parents not to know the location at present, we have already started getting expressions of interest, which demonstrates that parents recognise the need for the school and want to become involved with its development.

“We can assure everyone that as soon as we have any further information about the location, we will communicate to all concerned.”

The Morden-based trust previously said the school would be a non-faith school with a Christian ethos and 60 reception places.

Within seven years, 420 extra school places would be available at the non-selective school.

Roehampton University and YMCA South West London are set to help in its running.

A Department for Education spokeswoman said: “We are still in the very early pre-opening stage for free schools due to open in September 2014 and it is highly unusual for a site to be secured so soon after their applications have been approved. We will continue to work closely with Park Community School to find a home.”