I live in London and did a bunch of research on the networks + employer recognition of both schools since I applied to them both. Cut a long story short, apart from your typical IB/MC firms, a lot of other employers will have never heard of Dartmouth and UChicago nevermind Tuck or Booth. This is actually more surprising for Booth because they have a London campus for their EMBA program. This does mean you will have a bigger Booth related network to tap into (less full time MBAs but EMBA grads). As for Tuck its network in London and Europe in general is not big but then that is partially a product of its class size. However from my experience there is really good quality there.
I think with either school you would be able to recruit for London. Whether that is in equity research, asset management or corporate finance I don't know. If you are looking at finance, recruiting for IB in London shouldn't be too hard. Your goals definitely speak to Booth's strengths, so I picked Booth.
*Updated 25th July*: Embracing the downtime
Elements of an MBA application series
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