Fascinating, so Portugal retains Mozambique (and Angola?).
Yes, as dubiously integrated parts of a Lusotropical concept of Portugal, together with Cape Verde, Macao and East Timor.
Any other colonies still in European hands?
- The UK retains most of her American Overseas Territories (Jamaica, Belize, Guayana, etc.), as well as many islands around the Atlantic, Indic and Pacific oceans; Singapour, Hong Kong and Weihaiwei in China, Suez, Malta and Gibraltar in the Mediterranean.
- France holds Algeria as an integral part of the metropole while West Africa is under colonial status with the eventual goal of final assimilation into the Republic (despite increasing unrest on the part of the natives...)
- Tunisia and Libya are autonomous republics inside Italy, with the latter being majority Italian, so they aren't colonies but neither independent. They also have some islands on the Indic Ocean taken from the French after the Great War.
- Germany holds Kiautschou and Kwangchow Wan in China, but they retreated from Zentralafrika at an unspecified-to-avoid-retconns date.
- Russia holds Central Asia and Dalniy in China.
- Japan (although not European) holds Korea and Taiwan.
- The Ottoman Empire (again, not European but still) retains most of the Arabian Peninsula, Levant and Mesopotamia.
- Spain, as OTL, holds Ceuta and Melilla in Africa but are not considered colonies but integral territory.
Why didn't Botswana and South Africa remain with UK?
Botswana was a British protectorate instead of full colony, as OTL. The native chiefs succesfully lobbied against incorporation into the Cape owing to the lack of European settlers, so when India achieved independence and the British policy shifted to colonial disengagement from the remaining native colonies, Botswana acceded to independence with close association with the UK.
The South African Republic (Transvaal), instead, was independent since after the Boer War (OTL First Boer War) together with the Orange Free State. ITTL the Second Boer War was avoided and both remained associated with the UK but fully independent. Despite calls by warmongering politicians of the Cape, the British Capelanders feared that if incorporated, Afrikaners would dominate the resulting polity and the UK would lose their position in Southern Africa. Boers wanted to preserve their newly declared ethnic homelands, while the Cape Dutch were divided between the Afrikanders who promoted a federation with their ethnic bethren and the Kaaplanders who saw themselves as part of a wider Euro-Capelander identity tied to Britain.