The sole thrust of the electromagnetic theme is to be able to predict and find novel ways of reducing susceptibility to RF threat and lightning strike. A single predictive code will be produced collaboratively by 3 Universities (Swansea, Nottingham and York). Swansea will apply novel numerical analysis techniques utilising fast hybrid mesh methods. Nottingham are researching ways to model small scale electrical devices within a large scale environment in an efficient manner. The aim is to be able to efficiently and accurately design with small gaps, slots, cables and wires. Such a tool will allow more detail and novel ideas to be explored at the concept stage. York are concentrating on material models - how to model carbon fibre structures, honeycombs etc. and on determining the effects of manufacturing irregularities on EM fields during pulsed RF threat and lightning strike.