My Bottom Line: David Martin, chief executive, Arriva
Arriva, external chief executive David Martin says it is vital to recognise the value of local expertise - the right people in the right place at the right time can make all the difference.
David appeared on The Bottom Line, external, which was broadcast on BBC Radio 4, external, the BBC World Service, external, BBC World television and the BBC News Channel, external. You can also download the podcast, external.
Explore more My Bottom Line, external videos.