Our old friends at Heart Radio are back with yet another A+ M&S interactive video powered by WIREWAX. For being one of the UK's largest radio stations, they are truly leading the class in video - using their custom WIREWAX assets again and again.

Calling all inventors and innovators! With back-to-school just around the corner (UGH!), the mega retailer has put out a pink sheet asking for brilliant school uniform inventions - offering £1,000 to spend at M&S to 4 lucky winners. In order to get picked for the winning team, you.

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It starts off with two star students presenting some of the mind-exploding innovations from the Marks & Spencer Inventions Lab. The Adjust-a-cuff makes sure your kids are comfortable and looking sharp, while the Stain Away will keep their new threads fresh and clean during food fights and finger painting. These inventions are as inspired as they are practical; making it a natural fit for our interactive video platform.

The students then ask you a short series of questions. Using WIREWAX technology, you can click directly in the video to choose your answer. Respond correctly and advance forward with praise. If you get the answer wrong though, don't stress, you get another chance - and with only two possible answers, we'd hope you'd get it right this time around. Once you've successfully aced the interactive video quiz, viewers can enter the competition straight through the video itself, and even sign up for the M&S or Heart newsletters to stay in the loop.

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In just a couple of days, the video has already soared past 8,000 views with more than 64% of viewers completing the video. The contest is open until 9th August - and they're almost halfway to matching the amount of entries from their last interactive video. The popularity and success come as no surprise. M&S and Heart have been distributing digital breadcrumbs across the web on their social channels driving traffic to the interactive video destination. They've even been making on-air call outs to Heart's listeners leading them to the site where the interactive video calls home. The competition is steep, more than 500 people entered to win through the interactive video in the first day alone. Enter now while you still can!