On 24 June 2014, Cathcart agreed terms on a two-year deal with Watford having been out-of-contract at Blackpool.
He officially became a Watford player on 1 July.

Cathcart's first Watford appearance came as a substitute for Gabriel Tamaș against Bournemouth on 20 September 2014, scoring an equalising goal on his debut.
In total, he played 29 league games, scoring three times, as Watford were promoted to the Premier League.
Cathcart has since signed new four-year deals in July 2015, June 2017 and June 2019.
On 24 June 2014, Cathcart agreed terms on a two-year deal with Watford having been out-of-contract at Blackpool. He officially became a Watford player on 1 July.
Cathcart's first Watford appearance came as a substitute for Gabriel Tamaș against Bournemouth on 20 September 2014, scoring an equalising goal on his debut. In total, he played 29 league games, scoring three times, as Watford were promoted to the Premier League. Cathcart has since signed new four-year deals in July 2015, June 2017 and June 2019.
Craig Cathcart