It was only a matter of time before we had explored all the pop-up ventures in East London that one serving only tap water was left.

H2Only will be in Shoreditch for one day on Friday, May 29, following on from other single-item hipster establishments such as Cereal Killers and Porridge Cafe.

However, this isn’t another mono-munch venue, but part of a fundraising campaign from the Royal National Lifeboat Institution (RNLI).

See, water can be a lot of fun

The charity’s H2Only challenge, starting at 5pm on Tuesday, June 2, encourages supporters to commit to drinking only water for 10 days (you're allowed to eat) in a bid to raise money for the water rescue service.

The RNLI provide a 24-hour service around the United Kingdom’s and Ireland’s coasts - and the River Thames.

For more information on the water-based challenge, go to