Upstairs Room at O'Neill's St Mary Street Cardiff
About this space
Our first-floor space at O'Neill's St Mary Street is the ideal venue for any occasion—whether it's a meeting, an all-day conference, a Christmas or engagement party, a milestone birthday, a networking event, a live music night, or even stand-up comedy. With a capacity of up to 300 standing, the room features a private bar, multiple screens, a projector, a flip chart, and a full PA system.
This versatile space can be arranged to suit your event’s needs, and you can make the experience even better with a buffet or drinks party. The upstairs room also has its own private entrance.
*PLEASE NOTE THIS IS NOT AN ACCESSIBLE SPACE, STEP ACCESS*
Event offers and packages
Package per person
GOLD BUFFET MENU - £14.95 Per Person
VEGGIE BUFFET MENU - £10.50 Per Person
+ Tea/ Coffee Add on Available
+ Drinks Party Package Available
-Vegetarian buffet option available. Please ask a member of our team for more information
-We have a selection of drinks packages available to compliment your buffet, please see PDF's for more details
Prices
Capacity
Catering and drinks
Facilities
Music & sound equipment
Accessibility
Rules of the space
Allowed events
Age policy
Guests under 18 are not allowed after 17:00
Host rules
-No smoking inside the building
-BYO bottle alcohol not allowed
-Unfortunately, the venue does not accept funerals or wakes
-Any damage to, or theft of, property at the Host Venue (including, but not limited to, music equipment, furniture, fixtures and fittings, and any other property of the Host Venue) caused during the event times on the event date is your responsibility and will be charged to you at full replacement cost
-No 18th Birthday Parties
Cancellation policy: Standard 30 day
Experience the Best of O'Neill’s St Mary Street!
Just a short stroll from Cardiff Stadium, O'Neill’s St Mary Street is the ultimate spot for live sports lovers—especially on International Rugby Days, when the atmosphere is second to none! With plenty of TVs and a dedicated function room, you’ll never miss a moment of the action.
Looking for something more private? Our second floor has it all—your own bar, private toilets, screens, projectors, and flexible setup options. Whether it’s a birthday bash, corporate meeting, all-day conference, networking event, or a completely custom experience, we’ve got you covered.
Plus, with a variety of buffet menus, drinks packages, and catering options, your event is in safe hands.
Drop us a message to find out more—we’d love to host you! 🍻🎉
Location
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