Simon Johnston talks about pulsars and their irregularities, particularly in the timing of pulsars. He discusses his work using the Parkes radio telescope in Australia to sample pulsars and what information can be gained from using these samples, before briefly explaining the possible use of MEERKAT to get a larger sample size. He then discusses his history at Manchester, where he did his PhD, and finishes by mentioning Gamma ray pulsars and the link between the radio work he has been doing and space based missions searching for gamma ray emitting objects.