Plans to transform Abingdon's Old Gaol and police station into an arts and cultural centre are moving forward - but the price has gone up and it could still be another three to four years before the dream is realised.

ABL Cultural Consultants have been appointed to see if the scheme is viable and prepare a business plan.

The aim is to create a 420-seat theatre, a studio theatre, a 190-seat cinema, museum, library and exhibition space, a pub and restaurant overlooking the river and small shops. Nearly two years ago a price tag of £10m was put on the project - but costs have risen.

If the scheme is to go ahead, the Heritage Lottery Fund will have to be convinced that it is needed and viable. The scheme will also need financial support from councils and businesses.

A report from the consultants is expected by the spring. They will investigate the feasibility of developing the site and survey people living within a 30-minute drive of Abingdon.

Vale of White Horse District Council deputy leader Tony de Vere, who is leading the project, said its sustainability would be "critically examined".

He added: "This stage is a watershed for the project. It will investigate the need, together with an estimate of the centre's likely use. We will prepare a business case which will have to justify the expensive redevelopment of the Old Gaol."