Imperial College London


Faculty of MedicineSchool of Public Health

Senior Lecturer in Bacterial Genomics



+44 (0)20 7594 3820n.croucher




1104Building E - Sir Michael UrenWhite City Campus





I am a Sir Henry Dale fellow in the Bacterial Evolutionary Epidemiology group at the MRC Centre for Global Infectious Disease Analysis, near Paddington. My work focusses on the biology of multi-strain bacterial populations, primarily Streptococcus pneumoniae (the pneumococcus). Such microbes often vary extensively in characteristics such as antibiotic resistance, virulence and expression of antigens that are potential vaccine targets. To understand this variation, my research encompasses laboratory molecular microbiology, analysis of genomic datasets, and computational modelling. Repeated emails are the best way to contact me.



Mallawaarachchi S, Tonkin-Hill G, Croucher NJ, et al., 2022, Genome-wide association, prediction and heritability in bacteria with application to Streptococcus pneumoniae, Nar Genomics and Bioinformatics, Vol:4, ISSN:2631-9268, Pages:1-11

Chaguza C, Tonkin-Hill G, Lo SW, et al., 2022, RCandy: an R package for visualizing homologous recombinations in bacterial genomes, Bioinformatics, Vol:38, ISSN:1367-4803, Pages:1450-1451

Lochen A, Truscott JE, Croucher NJ, 2022, Analysing pneumococcal invasiveness using Bayesian models of pathogen progression rates, Plos Computational Biology, Vol:18, ISSN:1553-734X

Wan Y, Mills E, Leung RCY, et al., 2021, Alterations in chromosomal genes nfsA, nfsB, and ribE are associated with nitrofurantoin resistance in escherichia coli from the UK, Microbial Genomics, Vol:7, ISSN:2057-5858, Pages:1-19

D'Aeth JC, van der Linden MPG, McGee L, et al., 2021, The role of interspecies recombinations in the evolution of antibiotic-resistant pneumococci, Elife, Vol:10, ISSN:2050-084X

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