Supply continued to edge up over the early part of 2026, with total availability standing at 4.7m sq ft. Grade A supply stands at 2.3m sq ft, with six Big Box units accounting for 41% of overall grade A space. The largest grade A space is the recently refurbished Harlow 240, which provides 240,090 sq ft of floor space. Second hand supply is biased towards units below 50,000 sq ft, accounting for 80% of second hand stock. The availability rate in North London & Herts is the lowest rate amongst the Glenny regions, standing at 6.3%.