David Blunkett MP, the man who introduced the idea of ID cards during the Blair years has emerged as its latest opponent. Perhaps opponent is too strong a term, as the former Home Secretary does support the idea of cards for foreign nationals. But, when speaking at Essex University this week, he is expected to warn the Government they are in danger of abusing their power by taking Britain towards a “Big Brother” state.

He will come out against the Government’s controversial plan to set up a database holding details of telephone calls and emails and its proposal to allow public bodies to share personal data with each other.

His surprise intervention will be welcomed by campaign groups, who regard him as a hardliner because of his strong backing for a national ID card scheme and tough anti-terror laws. The former home secretary will propose a U-turn on ID cards for British citizens, although he agrees with plans to make them compulsory for foreign nationals.

According to reports, Blunkett still believes Labour has got the balance between liberty and security “broadly right”, but will criticise them for letting legislation be used for purposes wider than originally intended – no doubt with a nod toward the data sharing provision within the Coroners and Justice Bill.

There is now a long, long list of people speaking out against ID cards on economic terms, practical terms, and ethical terms.

A question from the Barcode Nation – who, other than Gordon Brown and Jacqui Smith – is speaking out in support?