UK hard house or simply hard house is a style of electronic dance music that emerged in the early 1990s and is synonymous with its association to the Trade club and the associated DJs there that created the style. It often features a speedy tempo (around 150 BPM but hard house ranges from around 135 BPM to around 165 BPM), offbeat bass stabs, hoovers and horns. It usually contains a break in the middle of the track where no drums are present. UK hard house often uses a long and sharp string note to create suspense. Most of the time, the drops are introduced by a drum roll.

Hard house has its immediate roots primarily in Belgian and German techno, American disco-sample based house music, handbag house and early trance.

UK producer and label owner John Truelove was quoted as saying of hard house's origins: "I would say that tunes such as XVX's "Tremorra Del Terra" and Interactive's "Amok" (essentially the same tune) were absolutely defining moments. Early German trance led directly to what Daz Saund and Trevor Rockcliffe were playing at Trade."

Tony De Vit was one of the key DJs to codify and popularise the hard house sound (earlier often referred to as 'hardbag'), taking inspiration from his early visits to Trade in the early '90s — where he soon became a resident DJ. De Vit is often cited as the "godfather of UK hard house".

Certain brands have reached legendary status with die-hard hard house fans, such as Birmingham based Sundissential and the record label Tidy Trax who also branched out in the early 2000s into putting on club events, including the Tidy Weekender 3 day events. Clubbers are known to travel cross-country to some parties. The venues associated with certain brands are almost the stuff of legend themselves and are remembered fondly and given almost cult status by veteran ravers. For example:

The Tidy brand began in 1995, when Amadeus Mozart and Andy Pickles formed the record label known as Tidy Trax, with its first release, the Handbaggers' "U Found Out", sampling Minnesota R&B group the Jets 1986 release "Crush on You", which peaked at number 55 on the UK Singles Chart. Pickles previously performed as Jive Bunny and the Mastermixers group between 1986 and 2002. Releasing music under the pseudonyms the Handbaggers and Hyperlogic, Amadeus Mozart and Andy Pickles did not officially use the name the Tidy Boys until 1999.

Between 1999 and 2006 The Tidy Boys were regular performers at festivals, music venues and night clubs around the UK and across the rest of the world playing locations such as Australia, New York, Las Vegas, Tokyo, South Africa, Ibiza, New Zealand, Hong Kong, Norway & Finland. In 2005/6 the Tidy Boys headlined key festivals such as Creamfields, Godskitchen Global Gathering, Escape Into The Park, Planet Love Festival and Dance Valley.

The Tidy Trax label, based in Leeds, was at the forefront of the hard house scene, specifically the years 1998 to 2005. The brand struggled in the late 2000s to keep going financially with dwindling sales (through its Tidy record label) and poor attendance figures to events. During the mid-2010s, however, the brand has had a huge resurgence and revitalized the UK hard house scene putting on huge events across the UK has been possible due to the fans being able to reconnect with the brand through the Tidy Boys official Facebook page and growing social media presence.