Projects · Hotels

Hilton London Bankside

2–8 Great Suffolk Street, Bankside, London SE1

Seventy-six new guestrooms and suites added to a five-star hotel that never closed: infill extensions over three floors, the rooftop plant enclosed within a new louvred envelope, and a complete ninth floor built directly above the live plant deck.

Client
Splendid Hospitality Group
Architect
Studio Moren
Our role
MEP design for the 76-room extension and step-by-step MEP enabling works design to build over the operating hotel
Size
76 new rooms · 368 keys after extension
A ninth-floor signature suite, built above a plant deck that kept serving the rooms below
A ninth-floor signature suite, built above a plant deck that kept serving the rooms below
76new guestrooms and suites
368keys, grown from 292 with the hotel open
16relocation sequences, 83 programmed activities
EPC Arating achieved for the extension

A 368-key hotel, open throughout

Every enabling activity touched systems serving occupied guestrooms, restaurants and back-of-house. Each step was planned precisely and the minimal interruption involved was agreed with the hotel in advance, through weekly progress meetings and a rolling two-week look-ahead. Every sequence stated the exact rooms affected, so the hotel could plan bookings around the works, and each VRF system was de-gassed, relocated, re-piped, pressure tested and recommissioned within a tightly planned window. Smoke extract, fire strategy and escape routes were maintained at every stage.

Point cloud to Revit to sequence

We began with a full equipment survey and a point cloud survey of the rooftop plant, converted into a Revit model of the complete existing installation. Coordinated with the structural engineer, the model established exactly which services clashed with the new columns supporting the ninth floor, so only the elements that had to move were touched. Each move was then designed and programmed individually, with its temporary impact on the hotel stated.

Revit model of the existing level 8 roof plant
The existing rooftop plant modelled from the point cloud survey
One of the sixteen relocation sequence drawings
One of sixteen relocation sequences: existing condensers in red, new positions in black, with the rooms affected stated

Relocate, renew and extend the warranty

Existing VRF condensers were de-gassed and moved to a designated external plant zone at level 8 on new panel boards, containment and refrigerant pipework. New Toshiba outdoor units were installed alongside the relocated plant, renewing the heart of the system and extending the manufacturer's warranty by seven to ten years. The open rooftop deck became an enclosed internal plantroom beneath the new ninth floor, with heat rejection consolidated outside.

Low-carbon retrofit

Mitsubishi air source heat pumps now produce the hotel's domestic hot water, sized for the enlarged building and replacing fossil-fuelled generation. A 50 kWp photovoltaic array was installed across the new roof levels and the old CHP engine was decommissioned and removed. Heat-recovery ventilation, LED lighting, lighting controls and energy metering give the extension an EPC A rating.

A new guestroom with views across London
The new rooms opened through 2026; guests would never know they sit above a plant deck that was surveyed, relocated and rebuilt while the hotel traded every day