I live in Petts Wood and I thought I'd done a good deed by helping a stranger by giving him £5 to get a taxi, as he was in dire need.

When I told a friend who lives in Bickley, she had also given a stranger in need £5 for a taxi.

We'd been conned as I shall explain: A man knocks on your door very distressed. He asks if you could give him a lift to King's College Hospital as his wife is there with their three-week-old baby.

He hasn't any money.

He states his father lives in the next road and gives you a house number, but he isn't in. He doesn't know what to do.

He is panicking by this point. The chap is well dressed and is very plausible.

Throughout the dialogue he wrings his hands and holds his mobile phone and is on the verge of tears.

He could have tricked hundreds of caring people by now but they're probably too embarrassed to tell anyone.

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