Town and country planning – Enforcement notice. The second defendant local authority issued an enforcement notice over all of the claimants' land. The inspector for the first defendant Secretary of State dismissed their appeal and the claimants appealed. The Administrative Court, in dismissing the appeal, held that planning permission had been lost, as the claimants had created two new planning units, which had materially changed the use from the planning permission. Further, the claimants could not rely on s 57(4) of the Town and Country Planning Act 1990, as the enforcement notice had covered areas that had not been the subject of the planning permission.