Top 5 Essex Venues That Cater for Over 300

When you’re tasked with planning a large-scale event, the stakes are naturally higher. Whether it’s a high-impact product launch, a prestigious awards gala, or a massive company-wide conference, finding a venue that can accommodate a guest list of 300+ without sacrificing style or logistical ease is no small feat. 

In the sprawling Essex countryside, the options range from historic manors to contemporary “blank canvas” spaces, but only a few truly master the art of large-scale hospitality.

Choosing the right venue in Essex means balancing that desired “destination” feel with practical proximity to London and major transport hubs like Stanstead. To help you narrow down your search, we’ve curated five standout venues that offer the space, the technology, and the professional support required to host 300+ guests with seamless precision.

Greenwoods Hotel & Spa

For those who want to pair a high-capacity event with quintessential English elegance, Greenwoods Hotel & Spa is a premier choice. Located just an hour from London, this Grade II listed 17th-century manor is steeped in timeless charm and surrounded by picturesque gardens. While it feels like a secluded countryside retreat, its beautifully designed function rooms are built for modern demands, offering light-filled spaces that can be tailored for grand weddings or impressive corporate gatherings. With an experienced on-site team and a kitchen capable of bespoke menu creation, Greenwoods ensures that even the largest events feel personal and polished.

The Grand Marquee Brentwood

If your vision requires total creative freedom, The Grand Marquee in Brentwood offers one of the most versatile “blank canvas” opportunities in Essex. This secluded, fully self-contained venue can comfortably host up to 400 guests, providing a stunning ivory-lined interior that serves as a neutral backdrop for luxe gala dinners or grand-scale weddings. Set against a backdrop of rolling greenery, it offers unbeatable views and a sense of exclusivity. Because it is a dry-hire-capable venue with ample parking and licensing for ceremonies in its outdoor pergola, it is a favorite for planners who want to build a truly bespoke experience from the ground up.

Charter Hall Colchester

When it comes to sheer scale and logistical efficiency, Charter Hall in Colchester is a regional powerhouse. Designed to handle the complexities of major corporate functions, exhibitions, and concerts, its combined main rooms can accommodate a staggering 700 guests. This is a venue built for “the big show” featuring cutting-edge audiovisual equipment, a built-in stage, and private car parking. Its proximity to public transport and Stansted Airport (only 30 miles away) makes it a strategic choice for international conferences or regional sporting events where accessibility is just as important as floor space.

Kings Oak Hotel

For those looking to trade the boardroom for a “chic retreat” vibe, Kings Oak Hotel offers a unique blend of 19th-century character and modern “Beach Club” luxury. Located just 30 minutes from London, this venue is incredibly popular for large staff training days, product launches, and high-energy Christmas parties. The spacious Kings Room is the hero for large groups, offering a versatile space with integrated AV and PA systems. For a more relaxed networking atmosphere, the Beach Club and its poolside terrace provide a breath of fresh air, proving that you don’t have to choose between a large capacity and a stylish, trendy atmosphere.

Orsett Hall Hotel

Orsett Hall Hotel strikes the perfect balance between Georgian-style sophistication and modern corporate functionality. It is particularly well-regarded for its extensive grounds, which are ideal for large-scale outdoor team-building activities before moving inside for a seminar or gala dinner. With state-of-the-art technology and a dedicated events team to manage the execution, Orsett Hall takes the stress out of complex logistics. After a day of exclusive dining at the Garden Brasserie or networking in their versatile indoor suites, your guests can retire to luxury on-site accommodation, making it an ideal “all-in-one” destination just 40 minutes from London.