Cardiff Bay

58 Bute St
Cardiff, CF10 5BN

mon-fri: 8am-5pm
sat: 9am-5pm
sun: 10am-5pm

Cardiff Castle

6-7 Duke St
Cardiff, CF10 1AY

mon-fri: 9am-5pm
sat: 9am-6pm
sun: 10am-5pm

Real human connections, welcoming environment and good vibes are what make Quantum, well, Quantum...

We do love a good chat at the bar and believe us, we've heard some wild stories over the years, and we've built a beautiful community in the process.

The Home of Tiger bay Coffee

When you visit one of our Cardiff coffee shops you can either enjoy our signature Tiger Bay Espresso Blend...

...or ask a barista which of our many exciting single origin beans we have on offer for V60.

And if you fancy something a little more… fancy… why not indulge in the 100% dark hot chocolate?

Coffee, cake and good vibes with a sprinkle of quirkiness guaranteed in both shops!