yes, they'd probably have Gibralter, but would also likely be able to do whatever they want in the Mediterranean outside of French waters because of the Royal Navy
so if they focus on having to go around the Cape, what do you think would be some colonies they establish mostly as restocking points?
they had the islands in the Atlantic..and they will keep the French islands...all of them.... that they seized in the Indian from the French in the Indian... Seychelles, Mauritius and ile Bourbon. or pass some to allies that had remained on side (less likely).... which puts them in a good position with the French position in the Indian ocean and probably India eliminated to intervene/influence both the Omani-Zanzibaris and the Imerina ( perhaps in a more hands off protectorate way a la the indian states. With France dominating the Dutch either directly or through a sattelite kdm re-established under a regency for Louis's son. You could get the Cape re-established as republic under the Statholder and mere protectorate of Britain. A smaller directly ruled colony could then be established in the East Cape and Natal.
Ghana is probably a given, since they are already there. and i suppose they could establish themselves more strongly in the Gambia River to oppose the French. Portugal could also be encouraged or backed as a surrogate. Same to some extent with Spain.... Any peninsular War situation , does not necessarily translate to French client. Guerilla warfare would be rampant under a French occupation and French imposed monarch. If the french withdraw The iberians witll make common cause with each other and under the British umbrella for their own protection. Britain will have an interest in seeing that anything like the Carlist pretenderes are resolved somewhat more conveniently for everyone.