Ian Woodward is from Chingford in north-east London and has lived in this area for most of his life. In 2005, he became the Regional Representative for the British Trust for Ornithology (BTO) in north London, organising BTO surveys in the area and working closely with the London Natural History Society (LNHS). Ian has worked for the BTO as a Research Officer since 2014 and became an LNHS Council Representative in 2015. Richard Arnold originates from north London but is now firmly settled in the south. He is the Regional Representative for the British Trust for Ornithology in south London and a professional ecological consultant at Thomson Ecology. He served on the council of the Chartered Institute of Ecology and Environmental Management (CIEEM) and helped develop CIEEM's guidelines on ecological impact assessment. Neil Smith trained as an ecologist, with an emphasis on botany and habitat surveying, and in doing so, developed an interest in the use of geographical information systems (GIS) in conservation and ecology. Neil currently works as a professional GIS consultant at Thomson Ecology. Neil managed the dataset and produced all the maps for The London Bird Atlas.