Every week, hundreds of London companies move toward a move, refit or refurbishment — a lease ending, a planning application, a growth spurt. The Index counts them, live, by submarket and sector — so you can see where the demand is before it reaches the market.
Across the 208,047 London companies Signal tracks, 579 are in market for an office move, refit or refurbishment right now — and 39 are moving imminently. A further 665 have a lease expiry or break approaching within the next 18 months — the window in which most office decisions are made. — Signal, November 2026
In-market companies by London postcode area.
The most active sectors moving toward an office change.
Companies with a known lease event ahead — the clearest signal of a move or refit, and the window to reach them first.
Central London office supply is tightening at the top. Vacancy has eased to around 7.5% in early 2026 from a peak near 10.6% a year earlier; take-up through 2025 ran broadly in line with the five-year average, with roughly 70% of it going to Grade A space — the best buildings are the scarcest. With prime space short and new completions forecast to fall sharply in 2026, the firms that reach an occupier before they go to market win the work.
Signal tracks 208,047 London companies and scores each on how likely it is to move, refit or refurbish its office soon — using the public records that precede an office change: registered lease data, Companies House filings, local-authority planning applications, and hiring and growth signals. "In market" means a company scoring 60 or above; "hot" means 80 or above. The Index is rebuilt from this live data and refreshed weekly.
Office-move signals from public record (the lease register, Companies House, local-authority planning) plus hiring, growth and news. Website evidence is gathered by our identified SignalBot from public company pages only — robots.txt honoured, no personal data. Figures as of 7 November 2026.
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The Index counts the market. London office moves this week shows what was publicly reported in it — requirements, deals, pre-lets and moves by sector and submarket, major-works approvals at named buildings, large leases newly registered — with a permanent page per week. Who has a lease ending: lease expiries by district and by year (2026 · 2027 · 2028 · 2029).
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The Index is the shape of the market. Signal hands your team the actual companies — scored, timed, and ready to call, on your patch.
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