agnes
Welcome to the forum, you might want to have a look at the following FAQ which explains where everything is
Welcome to Benefits and Work I would not bother with photographs of the aids that you use it is much more important to explain why you need them and why you cannot complete a PIP activity without them.
Scotland is covered by IAS (formerly ATOS) but I know that they have sub-contracted the assessments in some areas.
For a home assessment, you will need your GP to explain in writing why you cannot attend at their offices, their statements must be unambiguous about your problems.
Gordon