Thanks for the response. The reason I asked was because I had read (if I understood it correctly) that the British Offices Abroad was included in Great Britain Scott Great Britain 1840-1973 as well as sold separately, and I found it a bit confusing.
Well, I thought you meant the countries themselves. The offices are contained as a separate page set for the Great Britain album, not the African one. So, you can get the pages for the offices without buying pages for Great Britain. FYI, the Scott British Africa Specialty Album is out of print.