I am currently working in the UK. In the North East part of the UK, Durham is the best among all other universities. It is one of the oldest university in the UK. I prefer Durham because for my future goals Durham makes more sense than LBS, Said, Judge and others. And Durham has a very good reputation in the UK and all over the world. When you compare Durham with Warwick I would say may be Warwick is better but it depends on your future goals. My company pays Warwick MBA fees for employees and has partnership with Warwick. Yet, in my case Durham is better than Warwick. Imperial I have no idea. And about Alliance, I visited Manchester University and liked it. The crowd was very young, I am 35 years old and did not feel like I would learn anything. I would consider Manchester and Durham same in terms of reputation. Yes, OXBRIDGE MBAs reputation exceeds than that of Durham’s. You should think about LBS too if you are applying OXBRIDGE. You should apply for Durham and Alliance too as there is no application fees for both - you just need time. I did a small financial assessment including return on investment, post MBA debt recovery time, etc. I found Durham is perfect for my case. You should do something like that too in order to determine which MBA is best for you.
I started the application for INSEAD, LBS, OXBRIDGE, Alliance and Durham. I only submitted Durham because it made financial sense to go with DUBS. Furthermore the average cohort age was higher for Durham hovering around 31. Durham does this one to one approach with everything. You have your own mentor, your own recruitment consultant, your own person for every walk of your MBA endeavour. I liked the fact that Durham has only few seats as compared to others. When I spoke to alumnus from INSEAD, LBS, OXBRIDGE, Alliance I noticed that each of these folks did not know each others from their own class. Durham guys were on nick name basis and very quick to collaborate and coordinate response. I ask the same questions copy pasted into linkedin messenger and send all. I am 100% sure doing MBA from Durham will be more fun and exciting. I already like the staff who is going to teach me stuff. Everything I saw on a MBA from Alliance, LBS & OXBRIDGE, I have found in Durham too. In my opinion other universities are more wealthier than Durham. I was offered over 3 wine to choose from in an open house event in LBS. Alliance had their event in an expensive hotel in downtown. Where as Durham booked a high tech conference room within their own MBA building and had some tasty sandwiches, cookies & other locally made food while I visited.
If you are in late 20s with a good GMAT then I recommend submitting application for LBS, OXBRIDGE, Alliance & Durham. With respect to MBA reputations in the UK, I personally feel, LBS > OX or CAM > Warwick > Alliance or Durham.