An exhibition of six artists - three British, three Spanish - developed as a collaborative project between Mariano de Blas and Blacklock, to examine relationships between Spanish and British contemporary painting. The title is derived from Madrid and London sharing the same (Greenwich) Meridian. The Spanish (Madrid) and British (London) artists were selected on the basis of their similarity of repute and complementary concerns.
Blacklock selected the British artists Noel Forster and Trevor Sutton, on the basis of their contribution to contemporary British abstract painting and their utilisation of formal language within painting. The selection was conditioned by the use of different conventions of pictorial space within the parameters of abstraction. This facilitated the means to compare Blacklock’s own claims for the space within his paintings, further developed in the essay by Hugh Stoddart on the three British artists.