12th Knot · Rooftop Bar · London
12th-floor rooftop cocktail bar of Sea Containers London (the former Mondrian) on the South Bank
12th Knot is the 12th-floor rooftop cocktail bar of Sea Containers London (the former Mondrian) on the South Bank, a wall of floor-to-ceiling glass framing one of the capital's best north-bank panoramas of the Thames and the City skyline.
The room is bright and striking, not moody, pairing velvet lounge seating and a marble bar with a small open-air terrace that closes at 10pm under licensing rules. Cocktails are the draw, alongside Champagne, wine and small plates built on seasonal ingredients. Fridays bring the Fry-Day Feeling, bottomless curly fries paired with martinis, and Wine Down Wednesdays cuts bottled wine by half from 5 to 7pm.
Weekend DJs take over on Saturday evenings with afrobeats, house and R&B, giving the room a glamorous, after-dark buzz heading into the night. The bar trades Tuesday to Saturday; Sunday and Monday it is closed.
Reserve through SevenRooms, especially for weekend and sunset tables; the terrace itself runs first-come, first-served. Dress code is smart-casual, no sportswear or flip-flops, and the room is strictly over-18s.
Address: South Bank (Southwark), London, United Kingdom, London
12th Knot takes reservations through SevenRooms. This MyRSVP guide covers the room, what it is known for and when to go in London; use the booking link on this page to reserve direct.
Hours of operation
- Tuesday: 17:00 - 00:00
- Wednesday: 17:00 - 00:00
- Thursday: 17:00 - 00:30
- Friday: 17:00 - 00:30
- Saturday: 16:00 - 00:30
Frequently asked about 12th Knot
How do I book a table at 12th Knot in London?
Submit the reservation request on this page and our concierge team confirms your table, quotes any minimum spend in writing, and coordinates arrival before you commit. Your host opens the door on arrival so you walk straight to a ready table.
How much is a table at 12th Knot?
A table at 12th Knot depends on the night (weekends and event dates price highest), your group size, and where the table sits relative to the DJ booth and dance floor. Rather than a price that changes weekly, MyRSVP quotes your exact minimum spend in writing when confirming, so you know the cost before you arrive.
What is the dress code at 12th Knot?
12th Knot keeps an upscale nightlife dress code: stylish, dressed-up attire. Avoid athletic wear, gym shoes, and overly casual looks. Your host manages the door with your table, and we confirm the current policy with your booking.
What time should I arrive at 12th Knot?
Table guests generally arrive as the room fills, with the peak on weekends. Your MyRSVP host coordinates a specific arrival window so you are not waiting in line.
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