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An advertising campaign has caused a stir. Beth McLeod finds out what Londoners thought.

Are you beach-body ready? It's the question asked the adverts by the protein supplement company, Protein World. Their posters, promoting the company's "weight-loss collection", feature a slim, bikini-clad woman that critics say set unrealistic expectations of women.

There will also be a protest in Hyde Park on Saturday wearing swimwear, to "take back the beach". The Advertising Standards Agency announced today that it has launched a social responsibility probe into the ad.