Title: XMM and Chandra Observations of High Redshift Galaxy Clusters Ben Maughan Astrophysics and Space Research Group School of Physics and Astronomy The University of Birmingham, UK Abstract: I present a sample of high-z galaxy clusters detected in the WARPS survey, and followed up with XMM and Chandra. I give a morphological tour of the sample, and focus on two fascinating clusters at the morphological extremes. The properties of the clusters, and their scaling relations are discussed, and compared with those of local clusters.