Walkers are changing three London based bus stops into Twitter vending machines for the next two weeks.

Lasting until September 10th the it is all part of the Do Yourself a Flavour competition, which invites users to suggest flavours of crisps to the company, the six finalists of which will be available from these vending machines to try. Visitors to these bus stops can then tweet to @Walkers_busstop with the code provided to grab a bag for free.

This will only be a limited time thing however, with only 260 packets available per bus stop per day, it’s first come first served.

“Walkers loves bringing fun to the nation and we are extremely excited to launch the UK’s first ever tweet-powered vending machine on the streets of London,” said the company’s marketing manager Lee-Teng Chung.

“The Do Us A Flavour campaign has taken the nation by storm so we are delighted to offer the public the chance to try the new flavours in such an innovative way. We can’t wait to hear more about what they think of the unique flavours.”

Those who do get a chance to grab a bag will be offered either Steak Fajita, Chip Shop Chicken Curry, Pulled Pork in a Sticky BBQ Sauce, Ranch Raccoon, Cheesy Beans on Toast and Hot Dog with Tomato Ketchup, all of which are also available to buy in shops now.

Users can also vote for their favourite at walkers.co.uk, the winner from which will grab a cool £1 million.

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