I would not put a hard and fast figure on it, since schools have to weigh up many factors when they are judging the candidate's ability to benefit from their MBA and the employers who rely on it. Even so, there's certainly an age profile. Here's a rough ranking I just made up of the ten top UK schools...
Younger
Imperial Oxford
Cambridge London
Cass Manchester
Durham Edinburgh
Cranfield Warwick
Older.
So, I think your work background is interesting at LBS and your career path is common there, so I think you have more chances there than at, say, Imperial or Oxford. Cass and Manchester are much easier [to get into, than LBS or Oxford] and their project-based approach helps you to build evidence for consulting firms. They also have great relationships with the generalist management consultancies, better than with the strategy firms.
By a diagonal strategy, I mean this: I am a tech marketer in London. I want to be a cheese COO in Italy, but no-one will hire me [because it's a leap too far: I have no network, no language skills, and the abrupt shift makes me look risky]. So, I go through steps, using the MBA for the hardest step. So, I do my MBA in Italy and become a marketing tech consultant, then I move in-house to a marketing operations role, then I become head of operations for a food wholesaler, and then I become COO of a cheesemaker. Okay, the whole process takes five or six years but I have to make leaps that are small enough to be feasible.
I never heard anyone say LBS is the only valuable MBA in the UK, but such people would be idiots [and I say that as an LBS MBA]. Almost any FT-ranked MBA will have a positive NPV. LBS simply has the largest of any MBA in the UK. Certainly, if you could go to LBS but decide not to, then you are destroying value. But if you can't go to LBS but can go to one of the schools I just mentioned above, then you will almost certainly have a huge return on your investment.
[Edited by Duncan on Apr 10, 2020]
I would not put a hard and fast figure on it, since schools have to weigh up many factors when they are judging the candidate's ability to benefit from their MBA and the employers who rely on it. Even so, there's certainly an age profile. Here's a rough ranking I just made up of the ten top UK schools...
Younger
Imperial Oxford
Cambridge London
Cass Manchester
Durham Edinburgh
Cranfield Warwick
Older.
So, I think your work background is interesting at LBS and your career path is common there, so I think you have more chances there than at, say, Imperial or Oxford. Cass and Manchester are much easier [to get into, than LBS or Oxford] and their project-based approach helps you to build evidence for consulting firms. They also have great relationships with the generalist management consultancies, better than with the strategy firms.
By a diagonal strategy, I mean this: I am a tech marketer in London. I want to be a cheese COO in Italy, but no-one will hire me [because it's a leap too far: I have no network, no language skills, and the abrupt shift makes me look risky]. So, I go through steps, using the MBA for the hardest step. So, I do my MBA in Italy and become a marketing tech consultant, then I move in-house to a marketing operations role, then I become head of operations for a food wholesaler, and then I become COO of a cheesemaker. Okay, the whole process takes five or six years but I have to make leaps that are small enough to be feasible.
I never heard anyone say LBS is the only valuable MBA in the UK, but such people would be idiots [and I say that as an LBS MBA]. Almost any FT-ranked MBA will have a positive NPV. LBS simply has the largest of any MBA in the UK. Certainly, if you could go to LBS but decide not to, then you are destroying value. But if you can't go to LBS but can go to one of the schools I just mentioned above, then you will almost certainly have a huge return on your investment.