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30 Berkeley Square, Mayfair

Client: Michael J Lonsdale and McLaren Construction

Location: Central London


This prestigious central London office block, originally constructed in the 1990s, was given a subtle but complete refurbishment to bring it up to date as the new headquarters for international auctioneers Phillips. New double height retail space was created at ground level, while a new sixth and seventh floor created offices with roof terraces providing stunning views across Mayfair. Additional space was created by relocating rooftop plant to the basement. Services contractor Michael J Lonsdale asked Adexsi to help install suitable smoke extract and ventilation equipment to suit the new building layout.


Working on a constrained site that required close co-ordination with other teams, Adexsi was involved in delivering mechanical extract to the basement space and a pressure controlled mechanical smoke ventilation system to the firefighting lobbies. The installation included axial fans on the roof and in the basement, Hexacoif ventilators on the roof, and standby systems that ensure building users are always safe.

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