London's commercial market is a set of distinct submarkets.
The City and Canary Wharf serve finance and professional firms, the West End serves funds and headquarters, Shoreditch and King's Cross draw tech and creative companies, and Park Royal, the Lea Valley and the Thames Gateway hold much of the industrial and logistics stock.
Flexible space and serviced offices have changed how smaller occupiers shop, so many start on a flexible deal and move to a lease as they grow. Most searches for a single listing end on commercial portals, so an agent's own site wins on expertise and advice.
Many firms are RICS-regulated, and occupiers notice when that is stated clearly.