Starbucks has revealed it will be giving free Wi-Fi access to its customers that have signed up to its rewards scheme.

Customers of the coffee shop chain that have a Starbucks Card will be able to log on to the net for free at any branch that offers Wi-Fi access through BT Openzone.

"We're delighted to add this new reward to the existing programme, and to provide our customers with extra value and a great experience every time they visit us," said Brian Waring, director of marketing, Starbucks UK and Ireland.

Starbucks logo Starbucks card free Wi-Fi

Chris Bruce, CEO, BT Openzone added: "By adding BT Openzone to its rewards programme, Starbucks is giving more customers access to a great place to work or catch up over email. The agreement marries excellent in-store Wi-Fi with the highest quality coffee".

To join the reward scheme, Starbucks customers should simply pick up a free card in store, load it with £5 credit and then register the card online. As well as being used to purchase drinks and food in-store, the card also gives customers access to rewards such as free flavoured syrup, an extra shot and even a free drink when bags of coffee beans are purchased.

BT announced in April that it was taking over the coffee chain's 650 Wi-Fi hotspots, which were previously provided by T-Mobile.

UPDATE 22/9: There is now some confusion as to exactly how wide-ranging this offer actually is, as the Starbucks website states "Free Wi-Fi is currently only available in the following stores: Kingsway Holborn (London), Chiswick Park (London), Ipswich and Dublin". Starbucks PR is checking its facts.

UPDATE 23/9: Starbucks has now confirmed that the card (from as little as £5, or £6.50 if ordered online) offers free Wi-fi every day in the vast majority of Starbucks 650 UK shops - but not those in supermarkets, stations or airports. Update information via @tomroyal at Twitter.

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See also: BT hits half a million Wi-Fi hotspots mark