Building activity index · #74
21 Arlington Street, SW1A 1RN
In Whitehall & St James’s (SW1A) — see every company in market in this district.
12
tracked occupiers
11
lease events in window
1
recent register events
Recent activity on the public record
building lease activity
11 lease events at this building in the last 21 days
17 Aug 2026
Occupier identities are deliberately not published on this page. Signal tracks each occupier's move, fit-out and refurbishment signals individually — clients see the names, scores and timing. Data as of 24 August 2026, from public registers (planning, works, HM Land Registry, rates).
Who's moving in — or out — of 21 Arlington Street?
See the named occupiers, their lease windows and their move signals.
Book a demo