Among the Buttercups, another flower is trying bravely to be seen through all the gold. These are the familiar pink flowers of the Red Campion (Silene dioica).
More colour is achieved by the small red flowers of the Sheep's Sorrel (Rumex acetosella), especially when seen against the yellow and orange flowers of Bird's-foot Trefoil (Lotus corniculatus).
Part of the Dock family, Sheep's Sorrel is common, but easily overlooked, but rewards closer inspection when in flower. Bird's-foot Trefoil - a Pea by any other name - is sometimes known as Eggs and Bacon because of it's flowers being of two different colours on the same plant.
All very colourful.