Download the old or previous Permitted Development Planning Legislation.

Why not read the actual wording of the old or previous Permitted Development rules that was applicable prior to 1st October 2008.

Perhaps you built a structure before the latest PD rule change and now need clarification on how you stand.

Here you will be able to download a the formal wording of the old legislation of the GPDO.

Download... 

Download - The old Permitted Development rules (pre-Oct 1st 2008)

Download - The Permitted Development requirements (1st Oct 2008)