The Vulcan Nd:Glass Laser Facility* at the Rutherford Appleton Laboratory, UK has had a long history of providing high profile science with an International reputation in the field of plasma physics, predominately for a university based user community. Current capabilities of Vulcan include multiple infrared (1.053 micron) beamlines operating in the few hundred picoseconds to several nanoseconds regime with a total energy of up to 1.8kJ, synchronised with a single Petawatt class (10^15W, 500J, 500fs) beamline capable of being focussed to an intensity of 10^21W/cm^2. It is proposed to significantly enhance Vulcan with the provision of an additional 10 Petawatt (300J in 30fs) beamline capable of generating intensities of 10^23W/cm^2 ' synchronous with the existing 1 PW system. This paper will provide an overview of and the challenges for the designs of the 6 year £25M upgrade project**, in terms of the laser, the high speed timing and synchronisation requirements as well as the computer control systems.