Bubbleology, the bubble tea concept, which launched in the UK last year, is to launch internationally after successfully opening its first overseas site in Warsaw, Poland.

The company, which was founded by former JP Morgan investment banker Assad Khan, plans to open further sites on the continent and also enter into the Middle East this summer as it begins the first phase of its global roll out.

The concept, which is attracting interest from private equity and institutional investors, is launching into the Czech Republic, Switzerland, Austria, Germany, Kuwait and the UAE.

The group will also open two further sites in London, including its second site in next month in Notting Hill. The concept will open in Pembridge Road. Additional outlets are set to open in other major UK cities by the beginning of 2013.

The business opened its first site in the capital last year in Soho’s Rupert Street.

Kahn said: “In the current climate, I’m thrilled that this British brand is defying the negative economic outlook, and is not only expanding in the UK but exporting itself abroad. Indeed, it is already attracting interest from private equity and institutional investors. With impending launches in Europe and the Middle East in 2012, next year’s focus will be Latin America, which is a key emerging market that we aim to expand into.”

The concept specialises in bubble tea, a sweet Taiwanese tea drink.

The concept allows customers to choose a range of teas to which add milk or fruit juice can be added. Finally tapoica pearls or balls are added, which generates the bubbling that the drink has become famous for.