London’s AI scene combines heavyweight research, abundant capital, pragmatic regulation and globally attractive tax/visa regimes. The result is an unusually founder-friendly environment: you can incorporate fast, hire world-class talent, access cutting-edge compute, raise sizable rounds, and operate under clear (but flexible) rules on data, safety and financial services. Below is a field guide to the UK’s AI business, legal and accounting landscape—what’s attractive, what’s changing, and how...