In 1997, the government of Prime Minister Chavalit Yongchaiyudh granted the company the sole right to manage duty-free business at the World Trade Centre in downtown Bangkok for 10 years.

[6] In 2004, the government of Thaksin Shinawatra granted King Power the right to operate duty-free shops at Suvarnabhumi, Bangkok's new main airport, for 10 years.

[6] As of 2016[update] King Power operated branches at Suvarnabhumi, Don Mueang, Phuket, Chiang Mai, and Hat Yai airports.

[9] In August 2010, following agreement on a three-year shirt sponsorship deal with King Power, Milan Mandarić sold the English football club Leicester City F.C.

to a Thai-led consortium called Asian Football Investments (AFI), owned by King Power Group's Vichai Srivaddhanaprabha.

Then in 2014, King Power gained an in-flight duty free concession from Thai AirAsia X and opened the first Leicester City fan store at BTS Siam Station.

The purchase of 39 percent of holding company Asia Aviation makes King Power the second largest shareholder in Thai AirAsia.

[15] In 2017, King Power was accused of failing to pay the Thai state 14 billion baht (£327 million) from the operation of their airport duty-free shop monopoly.

The lawsuit alleges that King Power colluded with airport employees to pay the government only a three percent slice of duty free takings.

[19] In August 2018, the court said it would extend a hearing into accusations of graft against AOT and King Power, delaying a decision on whether to take up the case.

In January 2019, it was revealed that King Power was among the donors at the pro-junta Phalang Pracharat Party's 600 million baht dinner fundraiser.

The country's leading duty-free retailer has launched a countrywide campaign called “Sport Power” that aims to develop football skills of the children.