Global Combat Air Programme, a defence partnership of UK, Japan and Italy, to sign the largest Thames Valley office lease in a decade

Mapletree, a Singapore’s REIT vehicle, owns the asset that acquired in 2016 for 563 million GBPs

Global Combat Air Programme (GCAP), a partnership that The UK, Japan and Italy signed in November 2025 for the developement of a new generation of combat aircraft, set it headquarters in Reading’s Green Park in a 150000 sqms building of Singapore’s Mapletree REIT, CoStar News reported stressing out that this contract has been the  largest office lease in the Thames Valley for a decade.

The new aircraft that GCAP is developing will replace the Japanese F-2 that also USA developed, and the Eurofighter Typhoon that the United Kingdom, Italy, Spain and Germany created. Japan’s Mitsubishi Heavy Industries, UK’s BAE Systems and Italy’s Leonardo will work on this new project. In 2016, Mapletree paid 563 million GBPs for acquiring Green Park from Oxford Properties Group  (press release) which invested 400 million for purchasing the asset from Prupim in November 2011. In 2016, Green Park had available to rent 1.4 million grade A sqms and further development potential of 1.1 million sqms.