It is one of the oldest architecture and engineering firms in the world, and it has designed many landmark buildings in Hong Kong, Shanghai and in southeast Asia.

[1] Based in Hong Kong, P&T claims its roots when architect William Salway set up his own practice on 1 October 1868.

[1] During the late 19th and early 20th centuries, the practice was very active in colonial Hong Kong, and in Shanghai, which was a treaty port at the time.

The company expanded internationally since around 2000, opened new offices in Dubai (2004), Wuhan (2005), Abu Dhabi (2007), Ho Chi Minh City (2008), Chongqing (2012), Indonesia (2014) and Shenzhen (2016).

The origins of the P&T Group date back to 1868, with founder William Salway's arrival in Hong Kong from Australia, to establish a design practice in response to the demand for grander buildings.

The grand Goodwood Park Hotel was completed in Singapore, reflecting a distinctive South East Asian tropical style.

[6] The Hilton Hotel, Choi Hung Housing Estate and AIA Building were completed in a modern style in 1960s, the latter two winning the Hong Kong Institute of Architects award.

[6][8] In 1970s, the Connaught Centre (now known as Jardine House) was completed, Hong Kong's first skyscraper, tallest building in Asia at the time and heralded the revitalisation of the Central District.

The Hong Kong Polytechnic University at Hung Hom was completed, the highest density campus in the world at that time.

[9] It now has 14 offices in China, Singapore, Thailand, Middle East, Vietnam, Indonesia, and Malaysia; a team of more than 1600 architects, engineers, and designers; and projects carried out worldwide in over 100 cities.