Your council's powers to withdraw permitted development rights

Additionally you should be aware that the council may have removed some of your permitted development rights by issuing an Article 4 Direction.

This means that you are required to submit a planning application for work that normally does not require one. Article 4 Directions are made when the character of an area of acknowledged importance would be threatened - and are most common in conservation areas. You will probably be aware if your property is affected by such a direction, however if you are not sure you can check with the council.