Juul Labs Inc will begin selling its e-cigarettes in the United Kingdom this week.

A Juul starter kit — including the device, a battery charger and four liquid pods — will be available to buy online and in 250 vape stores in the UK this week.

“There are 7.5 million adult smokers in the UK and they aren’t well served by the e-cigarettes that are out there,” Juul UK managing director Dan Thomson said Monday in an interview. “This is a huge opportunity for us.”