“Gateshead (England) has a lot of both”
You mean Yeshiva Gedola, one of several yeshivos in Gateshead.
It is true that they have a mixture in terms of the bochurim. Officially it was always supposed to be a third chassidish, not more, so as to retain the tzuro of a litvish yeshiva ( they say there is a machlokes between the hanholo if it is a shlish mil’gav or shlish mil’bar, ie 33% or 25%),
However in terms f the hashkofo of the yeshiva and the background of the hanholo, it is exclusively litvish,
The original question isn’t clear if he meant a mixture of bochurim or one where the hashkofo is a bit chasidish and a bit litvish, so I’m just clarifying.