Our Balloon Semi-Arches — also known as Balloon Half Arches or Asymmetrical Balloon Arches — create the perfect entrance feature for events, launches, weddings and celebrations. Designed to add shape, movement and height, each semi-arch is fully bespoke and crafted around your space and theme.
This page includes a range of asymmetrical organic designs. Because every installation is custom-made, pricing varies based on size, colours and location.
Semi-arches can be attached directly to buildings, walls or existing structures, or provided as freestanding frames depending on your layout and venue requirements.
All displays are made using high-quality, biodegradable balloons and refined techniques that extend the lifespan of your installation.
To receive a quote, simply share your measurements, dates, colour preferences, mood boards or visual references, and our team will provide a tailored proposal.
For outdoor installations that need to last longer, we recommend double-layered balloons — helping lock in air and maintain a premium finish for extended periods.
Ready to transform your next event or brand activation with an unforgettable balloon installation? At London Balloons, we bring creativity, precision and a touch of luxury to every project — whether you’re hosting a corporate launch, retail opening or private celebration.
London Balloons designs and installs custom Balloon Semi-Arches across London, offering high-impact asymmetrical balloon structures for store openings, weddings, brand activations, office events and private celebrations.
We regularly install Balloon Half Arches in Piccadilly, Soho, Tower Bridge, Bond Street and Bishopsgate, working with offices, retailers, hotels, restaurants and event venues.
Semi-arches are ideal for entrances, step-and-repeat areas, photo backdrops, storefronts and event focal points. Each installation is designed to complement your space and elevate your event styling.
Our clients include global brands across technology, retail, fashion and hospitality. Visit our case studies to explore our wider portfolio.
A Balloon Semi-Arch — or Balloon Half Arch — is an asymmetrical balloon installation that frames a space without forming a full arch, ideal for entrances and photo moments.
Yes — each design is completely custom, including size, colours, shape and overall style. We create semi-arches to suit your theme, brand identity and venue layout.
They can be freestanding using a frame or attached directly to a suitable surface, depending on the space and event.
Indoors, semi-arches can last several days. Outdoors, we recommend double-layered balloons for extended durability.
We install across Piccadilly, Soho, Tower Bridge, Bond Street, Bishopsgate and Greater London.
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