I ask because sometimes a film credits will mention the studio where they did some post-production or editing work and only sometimes will they say in the credits exactly what they did in each place.name='Joe Fraguela']Hi Steve
I will re-check when I get home later this evening, but I am definetley sure that it stated in the end credits, filmed at Merton Park Studios. Maybe someone else who has a copy of the The Corpse a.k.a Crucible of Horror from 1970 can verify this. There is quite a fair bit of filming on location.
British films did quite often make use of the facilities of more than one studio.