Gilding made his television debut at the 2011 UK Open at the Reebok Stadium in Bolton as a pub qualifier. He defeated Brendan Dolan, Matt Clark, Andy Hamilton before losing 9–2 to Mark Hylton in the last 32 earning himself £2,000 in the process.
Gilding's best result of 2012 was getting to the quarter-finals at the UK Open Qualifier 7 at the NIA Community Hall, Birmingham defeating Joe Cullen, Scott Rand, Mark Hylton and Simon Whitlock before losing 6–3 to Kevin Painter. He headed into 2013 ranked world number 73. Gilding failed to qualify for the 2013 UK Open as he finished 142nd on the Order of Merit, outside of the top 96 who claimed their places. In October, he reached his first semi-final in a PDC ranking event at the tenth Players Championship of the year. Gilding saw off the likes of Dave Chisnall and 2008 BDO World Championship winner Mark Webster before losing 6–2 to five-time world champion Raymond van Barneveld. However, at the end of the year his tour card status expired and Gilding was ranked 78th in the world, outside the top 64 who remain on the tour. He entered Q School in an attempt to regain his place and was successful on the first day by beating Jamie Bain 5–0 in his last match.
Gilding reached his first career PDC final at the second UK Open Qualifier, beating the likes of Raymond van Barneveld, James Wade and Phil Taylor to face reigning BDO World Champion Stephen Bunting. He lost 6–5 in a thrilling final but earned £5,000 which saw him qualify for the UK Open. He entered the tournament in the third round and received a bye as Wes Newton withdrew, before being defeated 9–4 by Kevin Painter. He reached his second PDC final just a month later at the first Players Championship in Barnsley. He defeated Jamie Caven, Jelle Klaasen, Michael Smith, Darren Webster and James Wade before he lost 6–5 to Gary Anderson despite averaging a superb 107.70.
Gilding's performances on the Pro Tour during 2014 saw him make his debut at the World Matchplay, where he was whitewashed 10–0 by Adrian Lewis. He also played in the World Grand Prix for the first time and beat Darren Webster 2–0 (sets) in the first round. Gilding faced 11-time winner of the event Phil Taylor in the next round and won the first set, but went on to be defeated 3–1. At the Players Championship Finals he was beaten 6–3 by Mervyn King in the first round.
Gilding earned £25,000 on the Pro Tour Order of Merit during 2014 to be the highest non-qualified player for the 2015 World Championship. He made his debut in the event against Robert Thornton and could only win two legs during the match in a 3–0 loss. His good year saw him start 2015 ranked world number 38, an increase of 40 places from 12 month ago. A semi-final defeat in the fourth qualifier saw Gilding enter the UK Open at the third round stage and he whitewashed Kevin Painter 9–0. Further victories over Jelle Klaasen (9–5) and James Wade (9–6) followed as he reached the quarter-finals of a major event for the first time in his career. Gilding faced Austria's Mensur Suljović and beat him 10–8 to set up a semi-final with world number one Michael van Gerwen. Gilding played the match of his career to date as he averaged 108.37, hit 10 180s and a 10 darter, but it wasn't quite enough to progress to the final as his tournament ended with a 10–8 loss. The £17,000 in prize money he earned saw him achieve his year's goal of breaking into the top 32 on the Order of Merit.
Gilding won his first match at the World Matchplay by holding on from 7–2 ahead of Mervyn King to triumph 10–8. He lost 13–7 to Peter Wright in the second round. Gilding could only win one leg in the first round of the World Grand Prix during a 2–0 set defeat against Simon Whitlock.
After whitewashing Gerwyn Price 3–0 in the first round of the 2016 World Championship, Gilding lost 4–0 to Adrian Lewis picking up just two legs in the process. He was beaten 6–5 by Ryan de Vreede in the second round of the UK Open. Gilding reached the semi-finals of the 10th Players Championship which included a 6–0 thrashing of Jelle Klaasen, but he suffered a 6–0 loss to Dave Chisnall. He qualified for the Players Championship Finals and was edged out 6–5 by Vincent van der Voort.
Gilding was 2–0 down in sets to John Henderson in the opening round of the 2017 World Championship, but rallied to draw level at 2–2. He survived one match dart from Henderson in the deciding set and it would go to a sudden-death leg. Gilding won the bull to throw first and took out a 75 finish to progress. He lost all four sets by three legs to one in the second round against reigning champion Gary Anderson.2015: First round (lost to Robert Thornton 0–3)
2016: Second round (lost to Adrian Lewis 0–4)
2017: Second round (lost to Gary Anderson 0–4)