Full or partial external decorating projects can be accommodated. If you want just your exterior walls painted and have UPVC windows, these can generally be masked up to protect them. If you have clean brick walls that are not painted, then just your woodwork can be painted.
Scaffolding can be supplied where required i.e. over conservatories or for high windows and fascias. I have a scaffolding service who I use regularly and have not yet come across areas that cannot be spanned.