Square-like mobile payments service officially rolls out following a three-month trial.
Square is dominating mobile payments in the US with its card-reading dongle, which plugs into iOS devices to accept transactions, and has faced a number of copycats in the form of PayPal, Groupon and more.
iZettle is also another Square-like platform, but only serves European markets, with the UK becoming the latest region served as of today.
The Swedish firm doesn't charge the small to medium businesses for the use of its service, but instead collars 2.75 per cent per transaction, conserving expense for traders as a result.
The dongle works with Android and iOS, while EE has been signed up as an exclusive partner to stock the device in 297 key stores across the country.
There was originally a problem with the acceptance of Visa payments due to the firm's mobile point of sale restrictions during the trial, but iZettle assures MasterCard (another partner), AmEx, and Visa will all be accepted.
Speaking at yesterday's press conference, Jacob de Geer, CEO of iZettle, said: "NFC is interesting, but it's still the promised land and doesn't have a guaranteed future.
"With iZettle, we're trying to solve an existing problem instead of finding a solution to an issue that doesn't exist. Cards are where the money is."