I work in bioinformatics, which I define very generally as anything that can be done on a computer and which is relevant to the biological sciences. In practice, however, most of my work over the years has been on sequence analysis with a minor component of network analysis. Having spent just over 10 years in the old MRC Virology Unit, I have also come to think of myself as something of a virologist manqué. Viruses, as well as being fascinating in their own right, are ideal subjects for bioinformatics. I'm lucky to have had the opportunity to work on a variety of viruses (herpesviruses, papillomaviruses, adenoviruses, polyomaviruses, hepaciviruses, parvoviruses, influenza viruses and paramyxoviruses) from many different bioinformatics research angles.