He signed a new two-year professional contract in April 2011, having scored at a prolific rate for the reserve and Academy teams. On 9 February 2012, D'Ath joined Yeovil Town on a one-month youth loan. On 11 April his loan was extended for the rest of the season.
On 25 October 2012 D'Ath joined Cheltenham Town on loan for a month. After playing only two games D'Ath picked up a knee injury which ruled him out for several weeks. Despite that his loan was extended on 22 November until January.
After making just one further appearance as a second-half substitute his loan was not extended further and he returned to Reading on 2 January 2013. Two months later D'Ath joined fellow League Two side Exeter City on a one-month youth loan. In November 2013 he joined Dagenham & Redbridge on a one-month emergency loan.
His loan was extended for a second month at the end of December, though in the first game after the renewal he was sent off for two bookable offences. In January, his stay was extended until the end of the season, with manager Wayne Burnett revealing that Reading would continue to pay all of D'Ath's wages. Northampton Town
On 12 May 2014, D'Ath was released by Reading.
Following his release he had trials with Bristol Rovers, scoring in a 1–1 draw with Cirencester Town, and Yeovil. On 7 August, D'Ath signed a contract with Northampton Town until January 2015.