WTT HK Limited (Chinese: 滙港電訊有限公司), was the second largest fixed-line telecommunication operator in Hong Kong.^{[1][better source needed]} In 2018, it was acquired by competitor HKBN and renamed to HKBN Enterprise Solutions HK Limited.

A member of the business groups TPG Capital and MBK Partners,^[1] as well as formerly The Wharf (Holdings), WTT HK was formerly known as Wharf T&T Limited (Chinese: 九倉電訊有限公司),^{[2][non-primary source needed]} New T&T Limited (Chinese: 香港新電訊有限公司)^[3][4] and Wharf New T&T Limited (Chinese: 九倉新電訊有限公司).^[5]

Established in 1995 as New T&T Limited,^[6] it was one of the first^{[citation needed]} telecommunication operators to be offered a fixed line license after the Hong Kong Government decided to open this market to competition;^[7] Cable & Wireless Hong Kong Telecom had heretofore enjoyed a monopoly.^[4] The next year New T&T Limited was offering IDD service and residential fixed-line services.^[8]

Making its first net profit in financial year 2001,^[9] it was soon after renamed Wharf New T&T Limited.^[10]

Another name change, in 2003, yielded Wharf T&T Limited.^[11]

By 2006, the company decided to differentiate its offerings by providing some services through a different unit; Wharf T&T would focus on business clients and subsidiary i-Cable Communications, residential ones.^[12]

In 2007, it founded Wharf T&T eBusiness Limited, a subsidiary that delivers broadband applications and web applications to SME customers.^[13]

In 2016, MBK Partners, North Asia’s buyout firm, and TPG, a global alternative asset firm, completed the acquisition of Wharf T&T Limited from The Wharf (Holdings) Limited on 9 November 2016. ^[14]

In 2017, Wharf T&T Limited announced the Company name change to WTT HK Limited (“WTT”).^[15]

However, in 2018, it was announced that WTT HK would be merged with HKBN.^[16][17] The deal was approved by the regulators^[18] and completed in the same year.^[19] In September 2019, WTT HK Limited was renamed into HKBN Enterprise Solutions HK Limited, as part of HKBN's unit HKBN Enterprise Solutions.^[20]

Subsidiaries include COL Limited, which provides IT services to businesses having more than "40 years experience in the IT sector";^[6] and WTT eBusiness Limited (WeB), which was established in January 2007 and is an Internet service provider catering to SMEs.^[6]