A pub function room with plaid carpet, wooden tables, and booth seating at O'Neill's Trinity Street Cardiff.
A pub function room with dark tiled walls, plaid carpet, wooden tables, and a leather bench at O'Neill's Trinity Street Cardiff.
A function room in a pub with wood tables, mixed seating, and plaid carpet at O'Neill's Trinity Street Cardiff.
An event space in a pub with booth seating, wooden tables, and a wall-mounted TV at O'Neill's Trinity Street Cardiff.
An event space in a pub with wooden tables, plaid carpet, and a large TV at O'Neill's Trinity Street Cardiff.
A pub exterior with black facade, branded awnings, outdoor tables, and yellow chairs at O'Neill's Trinity Street Cardiff.
A bar with chilled Peroni beer bottles in white ice buckets at O'Neill's Trinity Street Cardiff.
A bar with bottles of Moët champagne and two empty wine glasses at O'Neill's Trinity Street Cardiff.
Bar snacks with nachos topped with jalapenos and a glass of draft beer at O'Neill's Trinity Street Cardiff.
A pub bar with a pepperoni pizza in the foreground and baskets of fries and sides at O'Neill's Trinity Street Cardiff.
A pub table with tortilla wraps filled with ham and lettuce alongside tortilla chips at O'Neill's Trinity Street Cardiff.
Bar bites including glazed chicken wings and mini burgers with lettuce at O'Neill's Trinity Street Cardiff.
A pub setting with fried snacks, dipping sauce, and hand-held appetizers at O'Neill's Trinity Street Cardiff.
A bar with a neon sign on herringbone tile and backlit liquor bottles at O'Neill's Trinity Street Cardiff.

Downstairs Section at O'Neill's Trinity Street Cardiff

Function Room in a Pub
·
Semi-private area
20-21 Trinity Street, Cardiff, CF10 1BH –
Cardiff Centre
Up to 20
seats
Up to 40
standing
Venue offers catering
External catering not allowed

About this space

The roped-off ground floor bar area holds 30–35 seated guests, or up to 40 standing.

The space is split across two sides, with booth seating and additional tables. It's a semi-private area for birthdays, after-work drinks, networking events, and celebrations.

The area includes multiple TVs (booth screens and two large wall screens), with an accessible toilet nearby. Buffet options and drinks packages are available.

Get in touch to discuss your event.

Offers and packages

Menus

 Drinks menu
Christmas menu

Prices

Monday
11:00 – 23:00
from £5 per person
Per session
11:00 – 23:00
from £5 per person
Alcohol licence until 2:00. Extension available. All prices include VAT.
Tuesday
11:00 – 23:00
from £5 per person
Per session
11:00 – 23:00
from £5 per person
Alcohol licence until 2:00. Extension available. All prices include VAT.
Wednesday
11:00 – 23:00
from £5 per person
Per session
11:00 – 23:00
from £5 per person
Alcohol licence until 2:00. Extension available. All prices include VAT.
Thursday
11:00 – 0:00
from £5 per person
Per session
11:00 – 0:00
from £5 per person
Alcohol licence until 2:00. Extension available. All prices include VAT.
Friday
9:00 – 0:00
from £5 per person
Per session
9:00 – 0:00
from £5 per person
Alcohol licence until 2:00. Extension available. All prices include VAT.
Saturday
9:00 – 0:00
from £5 per person
Per session
9:00 – 0:00
from £5 per person
Alcohol licence until 2:00. Extension available. All prices include VAT.
Sunday
11:00 – 22:00
from £5 per person
Per session
11:00 – 22:00
from £5 per person
Alcohol licence until 2:00. Extension available. All prices include VAT.
Best price guarantee
Pricing updated by venue 4 months ago

Capacity

  • Standing
    up to 40
  • Dining
    up to 20

Catering and drinks

In-house catering available Venue can organise food and drink
Extensive vegan menu
Extensive vegetarian menu
American cuisine
No external catering allowed
Venue provides alcohol Venue can supply alcoholic beverages
No BYO alcohol allowed

Facilities

  • Wi-Fi available
  • Flatscreen TV
  • Flipchart
  • Conference call facilities Equipment for video or phone conferencing during your event
  • Air conditioner
  • Natural light Room has windows or a skylight, so daylight comes in
  • Paid parking facilities available nearby
  • Unavailable: Projector
  • Unavailable: Whiteboard
  • Unavailable: PA system / speakers
  • Unavailable: Photo equipment
  • Unavailable: Video equipment
  • Unavailable: Lighting equipment
  • Unavailable: Greenscreen
  • Unavailable: Backdrops
  • Unavailable: Storage space
  • Unavailable: Quiet space
  • Unavailable: Dance floor
  • Unavailable: Soundproof
  • Unavailable: Mirrors
  • Unavailable: Accommodation is available on-site

Music & sound equipment

  • Own music not allowed
  • Bring your own DJ not allowed
  • No noise restrictions

Accessibility

  • Wheelchair accessible Step-free access throughout the venue for wheelchair users
  • Accessible toilets Toilet(s) adapted for guests with disabilities
  • Ground level Guests can enter without using stairs
  • Unavailable: Accessible parking spot available
  • Unavailable: Lift to all floors
  • Unavailable: Cargo lift

Rules of the space

Allowed events

  • No promoted and ticketed events allowed
  • Temporary Event Notices (TENs) available
  • No wedding licence

Age policy

Guests under 18 are not allowed after 20:00

Host rules

-No smoking in the building
-No external catering allowed
-No BYOB
-Under 18's allowed in the venue until 8pm

Cancellation policy: Standard 30 day

Show cancellation details

O'Neill's Trinity Street Cardiff is a #Supervenue

#Supervenue program is based on our customers' feedback and highlights venues that are most dedicated to providing outstanding hospitality, customer service and event experience. Read more
Customers rated communication with this venue and their event experience as Superb
Response time: within a couple of hours
Response rate: 92%

About O'Neill's Trinity Street Cardiff

O'Neill's Trinity Street Cardiff is a Trusted Tagvenue Partner, validated by the Tagvenue team with a record of successful bookings on the platform.

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Location

Location map

Meet your host

Prabs Ragbotra
Member of Tagvenue since February 2025
11 Reviews
4.8 Rating
1h Response time
100% Response rate

Contact venue managers directly on Tagvenue. Keep all event communication on the platform for a secure, seamless booking.

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