GridPP as an organisation manages the UK's involvement in CERN's Large Hadron Collider Computing Grid project (LCG). GridPP is a collaboration of Particle Physicists and Computing Scientists from 19 UK universities, STFC Rutherford Appleton Laboratory and CERN. They have built a distributed computing Grid across the UK for particle physicists. Currently there is a working particle physics Grid across 17 UK institutions.
GridPP oversees a Tier 1 facility at the STFC Rutherford Appleton Laboratory (RAL) and the Tier 2 organisations of ScotGrid, NorthGrid, SouthGrid and London.
GridPP is also part of larger, interdisciplinary project, called EGI - European Grid Initiative. Funded by the EU, EGI started in May 2010 with the aim of bringing together computing Grids from different countries and disciplines. It now covers areas from geology to computational chemistry, with 30,000 CPUS (central processing units) at over 200 sites in 39 countries. The GridPP grid is part of the EGI network, providing computing power to tasks beyond the high energy physics world.