Our Paediatric Allergy Network of health care professionals spans the whole of the North West of England. We also work with colleagues in North Wales to help support children there. The North West population accounts for just over 13% of England’s total population. 38% reside in Greater Manchester, 21% in Lancashire, 20% in Merseyside, 15% in Cheshire and 7% in Cumbria. The North West is the third most populated region in the UK after the South East and Greater London. It is a very diverse region, with Manchester and Liverpool amongst the most diverse cities in Europe.