The strong period of activity in the latter part of 2025 saw supply fall back to 6.6m sq ft in Q1 2026. Grade A supply accounts for 30% (2.0m sq ft) of overall supply, the lowest proportion in the Eastern M25. Six Big Box units account for 57% of overall grade A space, with the largest unit being the 304,196 sq ft unit at Powerhouse Dartford. The availability rate has reduced to 6.8%, the second lowest rate across the region.