Also, found these 30mm http://www.demon-tweeks.co.uk/performance/lowering-springs/car/nissan/micra/2005/1-2-k12
and these 50mm http://www.demon-tweeks.co.uk/performance/lowering-springs/car/nissan/micra/2005/1-2-k12/eibach-sportline-lowering-spring-kit-lowers-front-45-50mm-rear-40mm