Yplan, the London-based startup that’s building a platform for selling last-minute event-booking on mobile, has closed a $12 million Series A round, led by General Catalyst Partners.

Existing investors Wellington Partners and Octopus Investments also participated in the round, along with a swathe of co-investors, including A-Grade, Kevin Colleran and David Morin’s SLOW Ventures Fund, and Shakil Khan, investor and advisor to Spotify and Summly.