The brief: The Great Gardens of Cornwall wanted to make a noise about Spring starting early in Cornwall. They wanted people to know that when 50 flowers bloom on a magnolia in Cornwall, then UK Spring has officially started and it's time for garden lovers to visit Cornwall and enjoy the spectacle.

Impact: We put in a call to Downing Street and asked our friends there if we could deliver a bouquet of the first Cornish flowers of Spring to No 10. Downing Street was enthused and not only invited us in, they also invited all of the Cornish MPs to come along for a photo and afternoon tea. A great, high profile day for the Lost Gardens of Heligan, Caerhays Castle and Tregothnan.

BBC and ITV camera crews came along to Number 10 to cover the story as well as national news photographers. Number10 tweeted about it and social media went wild...