In October 2007, Martin was unable to attend his adoptive daughter Sarah's wedding to Jason Grimshaw as Charlotte was unwell. In 2009 when David stayed with his dad for a couple of weeks, he got to meet his half-sister and spoke about her to his ex-girlfriend Tina McIntyre after returning home.
By March 2018, Martin and Robyn had decided to move once again in search of a new life in New Zealand which shocked David. At first, he was resentful that his father was moving away but eventually warmed to the idea of a new life after being raped by Josh Tucker. Martin was sceptical about David's decision to uproot his own family.