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.