Research and Publications
Biological Records Centre Annual Report 2005-2006. Joint Nature Conservation Committee, Peterborough.
(2006) The contribution of volunteer recorders to our understanding of biological invasions. Biological Journal of the Linnean Society, 115, 678–689.
(2015) 
Data Accuracy and Citizen Science: Lessons Learned from Studying Lady Beetles in the US and UK. Frontiers in Ecology and the Environment, 10, 471- 476.
(2012) The harlequin ladybird, Harmonia axyridis: global perspectives on invasion history and ecology. Biological Invasions, 18, 997-1044.
(2016) The harlequin ladybird, Harmonia axyridis, reaches Scotland. Entomologists’ Record and Journal of Variation, 120, 42-43.
(2008) (2008)
Harmonia axyridis in Europe: spread and distribution of a non-native coccinellid. BioControl, 53, 5-21.
(2008) Harmonia axyridis in Great Britain: analysis of the spread and distribution of a non-native coccinellid. From Biological Control to Invasion: the Ladybird Harmonia axyridis as a Model Species From Biological Control to Invasion: the Ladybird Harmonia axyridis as a Model Species. pp. 55-67. Springer Netherlands.
(2008) (2007)
Ladybirds (Coccinellidae) Of Britain And Ireland. Field Studies Council, Shrewsbury.
(2011) (2008)
The most northerly record of the harlequin ladybird (Col., Coccinellidae) in the British Isles. Entomologist's Monthly Magazine, 145, 43-44.
(2009) (2010)
(2007)
The spread of the harlequin ladybird in Cambridgeshire and Huntingdonshire. Nature in Cambridgeshire, 49, 55-57.
(2007) (2007)
(2012)
(2013)