Delivering the redesign
April 2025
The fourth redesign of the square in its c.300-year history is the largest private investment in green space in London’s West End in a generation. Engagement with neighbours and other London communities has been at the heart of this redesign and will continue to be so throughout its delivery.
So, ahead of works starting in June 2025, we are pleased to introduce you to the contractors at Maylim will be leading this exciting transformation and provide detail on the approach to deliver this project. This online exhibition is split into 7 sections or the content is also available to download by clicking here.
Public benefits
Following 5+ years of engaging local communities, Grosvenor Square is being transformed into a world class green space with groundbreaking environmental credentials. See the consented scheme here.
- A green oasis for Mayfair, providing residents and visitors with a calm place to relax and connect with nature
- Reinstated and enhanced heritage features to celebrate the rich history
- A new education building, spaces for children to play, a kiosk serving refreshments and public toilets
- A rich variety of plant life, with over 67,000 new plants and 63 species, over 82,000 new bulbs, and 44 new trees being planted
- Public art plinths to bring greater cultural variety to the square
- Drinking water fountains to reduce the need for bottles
- Space for 350+ people to sit on a variety of seating (a 300% increase)
- Extended opening hours made possible by high quality lighting
- Wild flowering lawn, wetland ponds and varied habitat areas for nature to thrive
- Improved accessibility through widened entrances, level paths and a new western entrance
Meet the contractors
Maylim are the main contractor that will be delivering the redesign. Maylim specialise in high quality public realm and landscaping schemes, such as Battersea Power Station and Finsbury Circus Gardens.
They are currently leading on the public realm at The Chancery Rosewood at the western side of Grosvenor Square, and as such the team is familiar with working within the Mayfair area. An integrated approach enables Maylim to be agile and flexible, working closely with stakeholders, and always striving for seamless project delivery.
Maylim will be sending monthly contractor newsletters – please click here to subscribe.
Gareth Kinsella, Project Manager
07508 017382
gareth.kinsella@maylim.co.uk
James Gunn, Senior Site Manager
07572 075288
james.gunn@maylim.co.uk
The project is also supported by a team of experts that includes the Design Team (Building Design Parntership), Horticulturalist (Professor Nigel Dunnett), Ecologist (Gary Grant), Grosvenor’s Landscape & Management Team, and more. Read about the wider team here.
Steps to minimise construction impact
- Working hours in line with Westminster City Council guidance: 8am – 6pm Monday – Friday and 8am – 1pm on Saturdays. No works on Sundays
- Welfare provided on site in dedicated cabins to ensure construction workers have suitable facilities
- Deliveries and construction traffic carefully managed by a Maylim logistics team and booking system for deliveries
- A temporary access route on the Southern side to ensure deliver vehicles can safely enter and exit the garden in forward gear
- Keeping the area and surrounding roads clean and tidy
- Equipment used to minimise & monitor noise & vibration with maximum limits set by WCC
- Full height herras fencing around the site perimeter and secure gates at access points
- Considerate Contractor Scheme will be followed and construction personnel actively managed
- A carefully sequenced programme to minimise time on site
Site plan
The plans show key site activity including site entrances, hoarding arrangement, and welfare location. Hover over the buttons on the plan below to see the different elements.
Activity on site and the set up may change during the project; any significant revisions will be shared on the website and communicated via contractor newsletters. Please note, if your business uses Grosvenor Square as a muster point, an alternative location will be needed.
During the first week, the Maylim team will need a single cabin located on the highway to enable them to set up Gate 1, the welfare cabins and the temporary surface.
Nearby green spaces
Grosvenor Square will be closed to allow the works to take place most efficiently but there are several green spaces within walking distance.
- Mount St Gardens: 0.2 miles / 4 minutes
- Berkeley Square: 0.3 miles / 7 minutes
- Hyde Park: 0.3 miles / 7 minutes
- Hanover Square 0.4 miles / 9 minutes
Overview of works & programme
We will be starting on site in June 2025 and are expecting to complete the works and reopen Grosvenor Square in summer 2026.
We had previously advised that works could take between 18 months or up to 2-years to complete. However, we have worked closely with Maylim to expedite the programme wherever possible. The redesign will be delivered in one phase and whilst this will require us to temporarily close the square, it will also enable us to reopen it sooner.
The first few months will include:
– Setting up the site, installing Heras Fencing around the perimeter behind the retained holly hedge
– Commencing the FDR statue and fountains restoration
– Decompacting the soil to improve its drainage and health
– Removing existing path
– Screw pilling beneath the new buildings in predetermined locations that avoid tree roots
Additional works taking place during the programme include:
– Planting around 150,000 new plants and bulbs, and 44 trees
– Erecting the two building
– Widening entrances and creating a new entrance on the Western side
– Creating the natural play areas
– Installing benches, new pathways and lighting
Keeping you informed
We are committed to keeping people updated throughout construction and will maintain this dialogue through various other channels. Find out more about our approach to keeping you informed here.
We also want to hear your views on the information shared above and if there’s anything else you’d find useful to understand more about going forward. Share your feedback here by 30th May!
