[5] On 4, 5 and 6 September, they teamed up with Daniel Moloney to represent the Fight Club: Pro promotion in the 2015 King of Trios tournament; they defeated Bruderschaft des Kreuzes (Jakob Hammermeier, Nøkken and Soldier Ant) in the first round, and United Nations (Juan Francisco de Coronado, Mr. Azerbaijan and The Proletariat Boar of Moldova) in the quarterfinals, before losing to Bullet Club (A.J.

On 30 December, Moustache Mountain defeated CCK (Chris Brookes and Kid Lykos) and London Riots (Rob Lynch and James Davis) in a three-way tag team match to win the vacant titles.

[18] Moustache Mountain had its first match outside of Chikara or Progress Wrestling on 15 September 2016 at the WhatCulture Pro Wrestling event Loaded #11, losing to Los Perspectiva (El Hijo De Gracie and Lucha Archer) in a three-way tag team match that also included Johnny Moss and Liam Slater.

[19] Competing in the Revolution Pro Wrestling promotion, the two won the British Tag Team Championship on 23 October 2017 at the RevPro Monday Night Mayhem event by defeating Chris Brookes and Travis Banks of CCK[20] They lost the titles of Minoru Suzuki and Zack Sabre Jr. of Suzuki-gun on 20 January 2018.

[23] The duo also competed in the Canadian promotion International Wrestling Syndicate, where they won the IWS World Tag Team Championship in October 2017.

[39] After their loss, Bate and Seven kept on competing mostly as singles wrestler while continuing to team up occasionally; Bate notably unsuccessfully challenged Walter for the WWE United Kingdom Championship at NXT UK TakeOver: Cardiff in a highly acclaimed match which earned a 5.25 star rating from Meltzer, making it the third match in WWE history to break the 5 star rating system.

[41] On the 2 June 2022 episode of NXT UK, they lost the tag titles to Ashton Smith and Oliver Carter in a triple threat match that also involved Die Familie (Teoman and Rohan Raja).

[42] On the 16 June 2022 episode of NXT UK, Seven turned on Bate by hitting him with a low blow from behind after making a fake retirement speech.