About The London Balloon Shop

The London Balloon Shop is the online home of Oscar's Den — one of London's most beloved and enduring party shops, with a story stretching back over four decades. Based in the heart of Belsize Village, NW3, Oscar's Den has been making celebrations special since 1983, becoming a cherished destination for families, friends, and anyone with a reason to mark an occasion. The London Balloon Shop brings that same warmth, expertise, and attention to detail directly to your door.

Balloons, Delivered With Care

We know that a balloon is never just a balloon. It is the thing that transforms a room; a balloon does more than just decorate, it instantly signals a celebration and makes guests feel special the moment they arrive.

Every order placed through The London Balloon Shop is fulfilled by the team at Oscar's Den — people who have spent years understanding what makes a celebration feel right, and who bring that knowledge to every arrangement they put together. Our helium balloons are delivered across London and within the M25, arriving ready to make an impression. Whether you are after a single statement piece or a full arrangement to fill a room, we will make sure it is exactly what the occasion calls for.

Every Celebration, Every Occasion

From birthdays and baby showers to hen parties, anniversaries, corporate events, and everything in between — The London Balloon Shop by Oscar's Den is here for all of it. No occasion is too small and no order is too large. If you are not sure what you need, get in touch. We have been answering that question for a very long time.

Want to See More?

Balloons are just the beginning. If you would like to explore the full world of Oscar's Den — the decorations, the fancy dress, the party paperware, the homeware, and everything else that makes a celebration complete — come and visit us in Belsize Village. The shop is where the magic happens in person; this is where it comes to you.