Later in 1910 Watt was runner-up in the first Perrier Water Assistant Professionals' Tournament at Bushey Hall Golf Club.

The prizes for this tournament were "presented by the proprietors of Perrier Water", the winner receiving 20 guineas (£21) and a gold watch.

[6] As well as winning the Scottish Professional Championship in 1912, Watt was also runner-up in the Dunlop Cup at North Berwick, 5 strokes behind Robert Thomson, and taking the £5 second prize.

[7] Watt reached the semi-final of the 1913 News of the World Match Play at Walton Heath Golf Club where he lost 3&2 to James Braid.

[8] In late 1914 Watt moved south, becoming the professional at the new Woodcote Park Golf Club near Epsom, Surrey.