Depends what you're looking for, if you're looking for a course with a decent amount of bio content rather than just mech/materials/EEE in the biomedical context then your choices are very limited, pretty much just Imperial and Sheffield from the courses I've seen so far. BioE is a difficult one to have a good course for because of the very interdisciplinary nature of it, you need good mechanical, biomedical, materials, and electrical departments, they then need to be good in the right areas (fluid dynamics, biomaterials, tissue engineering, embedded systems, medical devices, medical imaging), and then all those departments need to work well together.
To comment on TastyPinkHair's choices: Kings' course is very, very EEE focused and their mech/mat/bio content is limited with mat and fluid dynamics content not coming in until years 3/4, their final year also contains both the individual project and group project which means your final year is going to suck. I don't really want to comment on UCL as their reputation has been quite mixed for engineering which makes it difficult to keep track of which disciplines they're good at, which they're bad at, and whether they've improved, their module list is also not particularly informative. Manc doesn't do Biomedical Engineering at undergrad so I'm a bit confused there, unless they've applied to Biotech which is a completely different degree. Oxford doesn't allow specialisation until 4th year and their reputation for engineering is take it or leave it relative to other subjects at Oxford.