We are planning a small addition to our existing loft extension. Wandsworth council will now permit you to extend the along the whole length of the rear roof (typical Victorian terrace), giving us space for a bigger bedroom and shower room there, instead of the existing small bedroom. That sounds complicated, sorry! If you are still following, and knowledgeable about these kind of extensions, could you post an idea of what you think the architect fees would be? I have been quoted £2900, and have no idea if this is standard or not. Thanks!