Facebook has been criticised by Trading Standards over its failure to stop counterfeit designer goods being sold online.

It comes as counterfeit traders have been openly selling fake luxury brands on the social media's Marketplace site.

An undercover investigation by BBC South East discovered that even after they had received fake goods ordered off the forum and reported it to Facebook the sellers were still continuing to operate.

Mike Andrews, lead co-ordinator of the National Trading Standards eCrime Team, says Facebook needs to do more to tackle the problem.

"In our opinion, we don't think Facebook does enough to remove the infringing goods that we see on their platform," he told the BBC.

"It's quite easy to go on there now and buy any sort of counterfeit product you would like, and when we've approached Facebook to try and get this content removed they simply don't act quickly enough, if at all, in many cases."

The investigation found that some counterfeiters even offered a home delivery service.

One counterfeit trader their reporters that he "could get away with it for about six months" before Facebook closed him down, and "then you start again".

The investigation found sellers in Sussex and Kent trading from the front rooms of their homes and from vans in pub car parks.