In order to use DIaL2.5 system at the University of Leicester, you need to apply for an account. Access to the DIaL2.5 (part of DiRAC) service is through peer reviewed applications. There are details of how to request access on the DiRAC website.
Once access has been approved, accounts are requested through the SAFE project and user management system operated by EPCC. SAFE stands for Service Administration From EPCC. Every DiRAC user has an account on SAFE. You can find more information on the DiRAC website.