http://vetmedicine.about.com/od/diseasesconditionsfaqs/f/FAQ_histiocytom.htmIt might be worth discussing with your vet whether they think it is one of these, whether they might be able to do a needle aspirate (suck some cells out with a needle - doesn't always give a result but can be done awake if the dog is calm) - don't know how close to the eye the lump is though, that might not be possible - and the risks of waiting a bit longer to see if it goes down (in case it is something else that would be better removed quickly, eg
http://www.vetsurgerycentral.com/mct.htm ) versus the risks of an anaesthetic in a bulldog.
Any help? Sorry, can't recommend specific bulldog vets, don't know any per se - think the Bulldog Club's list are ones people have used and recommended - so maybe if you're not happy with yours you could try another local one and explain your concerns. :-)