[8] He followed up successfully on soft ground at Thirsk Racecourse four days later, taking the lead a furlong out and coming home six lengths clear of the Mark Johnston-trained Notarised.
On his first appearance of 2015 Penhill started 13/8 favourite for a handicap over one and a half miles at Ascot on 9 May and held off a strong late challenge from New Years's Night to prevail by a short head.
On his first run for his new trainer, Penhill started odds-on favourite for a minor event over two miles at Tramore Racecourse on 4 May and won easily by a length and a half after taking the lead on the run-in.
[14] Penhill began his autumn campaign at Listowel Racecourse on 17 September when he was ridden by Ruby Walsh and won bu seven lengths from his stablemate Bel Sas after taking the lead between the last two obstacles.
With Walsh again in the saddle he jumped poorly in the early stages but overtook the Henry de Bromhead-trained Balzac Turgot two flights from the finish and drew away on the run-in to win by four and a half lengths.
[17] On 4 December Penhill was moved up to Grade 1 class for the Royal Bond Novice Hurdle over two miles at Fairyhouse and came home fourth behind Airlie Beach, Saturnas and Le Martalin after being badly hampered at the second last.
Ridden by Paul Townend, Penhill raced towards the rear of the five-runner field before moving up to take the lead at the second last before pulling away to win "easily" by seven lengths from Call The Taxie.
After being restrained by Townend in the early stages he moved into contention in the last half-mile and recovered from being hampered at the penultimate obstacle to take the lead from Monalee approaching the final flight.
"[21] Walsh took the ride when Penhill started the 2/1 favourite for the Grade 1 Irish Daily Mirror Novice Hurdle at Punchestown on 26 April and finished second to the Gordon Elliott-trained outside Champagne Classic.
After an absence of almost eleven months, Penhill returned to the track to contest the Grade 1 Stayers' Hurdle at Cheltenham on 15 March 2018 in which he was ridden by Townend and started at odds of 12/1.
In January he finished second to the French-bred mare Benie des Dieux in the Grade 2 Galmoy Hurdle at Gowran Park although the details of the race where hard to establish as it was run in thick fog.
He produced arguably his best run of the season at Navan Racecourse in February when he was a four-length runner-up to Cracking Smart in the Boyne Hurdle with Tiger Roll finishing fifth.
At Cheltenham on 12 March the gelding started the 10/1 joint third choice in the betting as he attempted to regain his Stayers' Hurdle title but went lame after the third flight and was pulled up by Townend.