[4] At the Dutch Darts Masters, he saw off established players Mark Walsh and Dave Chisnall, before Brendan Dolan eliminated Pallett in the third round.
[7] Pallett defeated Jamie Lewis and Andy Hamilton at the German Darts Masters, before reigning world champion Michael van Gerwen eliminated him 6–4 in the third round.
[11] At the 2015 UK Open, Pallett defeated Mark Dudbridge, Andy Smith and Colin Fowler to play in the fourth round of the event for the second year in a row.
His run continued with 6–5 wins over Alan Norris and Kim Huybrechts to reach the semi-finals of a PDC event for the first time, where he lost 6–3 to Dave Chisnall.
[18] His third round match with Raymond van Barneveld at the UK Open went to a deciding leg in which the Dutchman threw an 11 darter to win 9–8.