The year 2026 marks an incredible milestone for the Society of Chemical Industry (SCI) as it celebrates 145 years since its founding. SCI established its headquarters at 14/15 Belgrave Square in the 1950s but by that point, the building and area had already witnessed a remarkable chapter of London’s history.
Belgrave Square was built in the 1820s as part of the grand vision of the Grosvenor Estate. Designed not simply as a residential address but as an elegant setting for London society, its wide-open square, sweeping terraces and private central gardens quickly became synonymous with elite social life.
During the Second World War, SCI’s headquarters was requisitioned by the government. As London braced itself for the threat of invasion, Belgrave Square was transformed into a temporary tank park. The surrounding buildings became hives of activity for government officials and wartime operations. Local lore even suggests that Rudolf Hess, the Nazi deputy leader who famously flew to Britain in 1941 in an attempt to negotiate peace terms, was questioned within SCI’s walls. While it has never been confirmed, the story has become part of the building’s enduring wartime mythology.
Furthermore, Belgravia has always balanced elegance with a hint of intrigue. Just behind the square in Belgrave Mews West sits The Star Tavern, a charming pub with a notorious past. In the early 1960s, its discreet location and intimate upstairs room made it the perfect hideaway for those wishing to avoid attention. It was here that the gang behind the infamous Great Train Robbery is said to have held their secret planning meetings.
One of the more colourful examples of the areas role as a gathering place was the Beano Belgrave, an annual summer celebration that transformed the square into a lively festival. A 1979 feature in Country Life Magazine described a day of fashion shows, exhibitions and charity events culminating in an evening event attracting over 10,000 guests. With music, dancing, food and drinks served beneath canvas tents stretching across the square, the Beano captured the spirit of Belgravia as a place designed for people to gather, celebrate and exchange ideas. This tradition continues in the events hosted at 14/15 Belgrave Square today.
Belgrave Square & SCI HQ today
Nowadays, Belgrave Square remains one of London’s most prestigious and sought-after addresses. Grand embassies from Germany to Ghana occupy its stately terraces, their flags adding flashes of colour to the gleaming facades. Whispers of presidential motorcades and high-level delegations circulate, reinforcing the square’s long-standing role as a discreet stage for global diplomacy.
From a first glance, SCI’s refined stucco exterior and sweeping red-carpeted staircase give guests an immediate sense of occasion, the kind of understated grandeur that modern venues often struggle to replicate. Inside, each room offers its own distinct character, making 14/15 Belgrave Square perfectly suited for hosting a wide range of events.
Council Room
Among the standout spaces is the Council Room. Its elegant neoclassical interior and striking high ceilings with period detailing offers an ideal setting for board meetings and private briefings. Hidden below, is a 130-seat auditorium providing a professional setting for presentations, lectures and screenings.
For more informal gatherings, the Garden Room offers a light-filled space with direct access to a private terrace for summer receptions or evening drinks. Together, these spaces create a calm and distinguished environment in the heart of central London, yet they lie just moments away from the hustle and bustle of Hyde Park Corner and Knightsbridge.
Garden Room
For those looking to host an event in central London, SCI’s headquarters offers a setting that is both distinctive and versatile. It’s a venue that elevates every event simply by the character of its surroundings. A blend of heritage and purpose where the past lends weight to the conversations of the present.
To become a part of 14 -15 Belgrave Square’s history contact venuehire@soci.org.
Image top: Ben Brooksbank / Belgrave Square, 1961 / CC BY-SA 2.0
