To ask the Deputy Prime Minister what powers he has to revoke a planning consent affecting an historic building whose listed status has been upgraded subsequent to the consent; and if he will make a statement. 
Planning permission can be revoked only in exceptional circumstances. It would be for the local planning authority to consider whether to make a revocation order. Any such order would need to be approved by my right hon. Friend the Deputy Prime Minister. In determining any subsequent application for planning permission, the local planning authority would need to take into account the revised listed status of the building.