Does anybody have any idea which school in the UK is better for an entrepreneur? I'm considering Cass, Warwick, and Imperial.

I'd say Cass if it's in the finance sector, Imperial if it's to do with technology or healthcare, and Warwick otherwise.

Depends on your work background and what you're looking for in a program. Imperial is listed as a top school for entrepreneurship here:

http://www.find-mba.com/specializations/36/entrepreneurship

But it looks like that's based mainly on the FT's rankings. However, it does have some infrastructure for entrepreneurship, and being in London you're in proximity to "Silicon Roundabout" and all of the other startup riff-raff that's been in the press recently.

So it looks like it's coming down to Imperial or Warwick. Are there others in the UK that you guys recommend?

I think the whole idea of an MBA in order to be become an entrepreneur is a bit odd. Entrepreneurs don't hire or become MBAs very often, because of the debt that MBAs carry. LBS is the top school for entrepreneurship because of its many assets, including an incubator, VC fund, the Deloitte institute etc.

What field is your start-up planed for?

Yes, you are right. I intend on using the MBA experience to get a good grasp of business fundamentals, have some time to work on my start-up, and be able to connect with angel and VC networks.

My start-up is in the online collaboration space.

Do you really need the MBA core? Why not take a masters in enterprise (My colleague took http://www.ucl.ac.uk/prospective-students/graduate/degrees/taught/tmstecsent01 and https://mec.portals.mbs.ac.uk/StudyEnterpriseWithUs/Postgraduatedegreeprogrammes/MasterofEnterpriseMEnt.aspx is even better grounded), or courses aimed at entrepreneurs? LBS entrepreneurship electives and the LBS summer school are open to occasional students (http://innovation.london.edu/student-experience/index.html)