Which UK manufactured air cooled engine brands were never ever associated with lawnmowers, motorcycles or motor vehicles?

That is were designed purely to drive other stationary equipment on a farm or in a factory?

Mark there are quite a few, see Patrick Knight's "A-Z of Stationary Engines".  Many of them are early and quite obscure.  I think I'll kick off with

"Richard Hornsby".

I tried to get valid responses to this topic from another angle in a previous topic question but another member put up a confusing list that included many of the manufacturers that were associated with lawnmowers, motorcycles or motor vehicles. So I'm trying again.

harrone wrote:I tried to get valid responses to this topic from another angle in a previous topic question but another member put up a confusing list that included many of the manufacturers that were associated with lawnmowers, motorcycles or motor vehicles. So I'm trying again.

Sorry missed the words "air-cooled". The previous thread did list quite a few, is there a particular reason you need the information ? It may help folks concentrate on the information you actually need.