Nuisance calls: 'There's a dirty trade in people's personal information'

People who get fed up by cold callers and nuisance text messages are being urged to register their complaints officially.

According to the consumer rights group Which, only 2% of people are complaining to the regulator Ofcom.

The Information Commissioner, Christopher Graham, said millions of cold calls were made in the UK every year as part of what he called the "dirty trade in people's personal details". He said reporting nuisance calls could help tackle the companies responsible for them.