[Yeul]

The reality is that the restaurant food is brought by trucks from warehouses. There are special companies that specialise in providing everything that a restaurant needs.

Aside from Michelin star places chefs don't go around buying anything the whole ordering is highly automated.

[briandear]

There are over 80 Michelin Star places in London. Not a small number of restaurants. Not to mention hundreds more that aspire to get a star and care deeply about being Michelin-level quality.

[fch42]

Visiting Billingsgate will teach you that quite a few restaurant folks (and quite a few "normal people") shop there, in addition to (smaller) fish traders.

Smithfield, at least to me, always had a different vibe; more pro-to-pro/business-to-business, but also they deliver or commission to pre order there; different from Billingsgate.