8 Bishopsgate contributes to the City of London's cluster of tall buildings, providing a 50-storey mixed-use office building for Mitsubishi Estate London. The project includes flexible retail space on the lower levels, extensive tenant amenities throughout the building and a public viewing gallery, The Lookout, on level 50. The building incorporates highly sustainable and energy-efficient initiatives in its construction and operation and has achieved a BREEAM 'Outstanding' rating. 8 Bishopsgate is considered the most sustainable speculative commercial project in the UK.