Stun gun used on dummy
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Illegal stun guns bought online clear UK customs

7 January 2013 Last updated at 10:13 GMT

Stun guns 20 times more powerful than police Tasers can be illegally imported into the UK with ease, a BBC investigation has found.

Reporters from Inside Out London were able to buy two illegal devices online and import them into the UK. Possessing a stun gun carries a maximum jail sentence of 10 years.

The UK Border Agency (UKBA) insists it is tackling the problem.

Mark Jordan reports.