
61 Whitehall
The MEP services were all replaced with a focus on energy efficiency using air source heat pumps, LED lighting and natural ventilation where possible.










Multistory is the bringing together of two separate buildings (formerly 2 Colmore Square and Cannon House) to create one exceptional workspace featuring Birmingham’s largest amenity space that ties together communal areas for inhabitation on a work and social basis.
The key improvements that have been made as part of this project include, 2 new receptions for a best-in-class arrival experience, the introduction of a 100-person Auditorium, new lifts with destination control, a bar/coffee lounge, an outdoor terrace, communal bookable meeting rooms, generous co-working areas, new car EV charging points, best in class cycle storage and outstanding showers and changing facilities. Multistory is setting the new benchwork for Sustainability, achieving WiredScore Platinum, Fitwel 2 star and Energy Performance Certificate (EPC) of ‘B’.
Air soured heat pumps provide the heating and cooling to the amenity areas with heat recovery air handling unit providing fresh air. White box retail units are provided at ground floor level with larger retail units within the lower ground level. The two levels are linked with a grand staircase.

The MEP services were all replaced with a focus on energy efficiency using air source heat pumps, LED lighting and natural ventilation where possible.

The project involved the refurbishment and extension of the existing building to deliver over 260,000sq ft of office space, achieving BREEAM ‘Outstanding’.

Located in the heart of London’s West End, 9 Cavendish Square is undergoing a high-quality refurbishment to transform this prestigious address into a modern, efficient, and sustainable workplace. The works involve a full mechanical, electrical, and public health (MEPH) services upgrade to deliver a building that meets contemporary operational and environmental standards.

The property situated on the A23 near Brighton was granted permission by the council under permitted development rights to change to a residential site from office development to provide 63 apartments. The apartments are separate over seven stories consisting of one, two and three bed apartments. The redeveloped to offer 59,000ft² of high quality residential accommodation, for which Watkins Payne supplied building services engineering and energy consultancy to achieve an EPCs between B – C rating.

The building services use a 4-pipe fan coil unit arrangement with various ventilation systems to suit the different use areas. Full building power back-up standby generation, UPS, security and access control and automatic blinds all formed part of the fit-out.

Watkins Payne carried out the Independent Design Review role for Block A at The Soapworks development.