aql is a telecommunications company based in Leeds, UK. It is principally known for operating carrier neutral data centres, and for providing services relating to colocation, mobile messaging, VoIP telephony, and secure 4G/5G mobile connectivity for the internet of things (IoT).

The company's head office is located at the historic Salem Chapel in Hunslet, Leeds.

aql was founded in 1998 by former University of Leeds lecturer and Ministry of Defence communications specialist Professor Adam Beaumont as a domain name registrar and email and web hosting company.

By 2003, aql had expanded into wholesale telecommunications, supplying UK phone numbers to the broadband industry to support IP telephony/VoIP services, providing mobile messaging services and supplying wholesale messaging platforms to international and UK networks. The company is responsible for more than 94 million numbers on 42 different telecoms networks. It also hosts 40 million UK numbers for voice services.

Beaumont purchased Salem Chapel in 2009. The Grade II listed building was renovated and restored to house aql's head office, including two data centres, an exhibition space and a conference facility.

The firm had a turnover of £7 million and employed around 40 people in 2013.

Also in 2013, aql announced plans to invest £43 million to build a data centre on the former site of Yorkshire Chemicals in Hunslet, Leeds.

The company acquired a 57,000 sq ft former council building located at South Point, Leeds for around half a million pounds in 2015. The company announced plans to convert the site into another data centre.