A government database that held records of citizens' phone and internet communications would be going a "step too far", according to the UK privacy watchdog.

While acknowledging that the monitoring of communications was important in the fight against crime, information commissioner Richard Thomas said such proposals should not go ahead without proper public and parliamentary debate.

Reports of the planned database first emerged earlier this year. Subsequently the government's Draft Legislative Programme referred to a Communications Data Bill which would include "modifying procedures for acquiring communications data".

"Before major new databases are launched, careful consideration must be given to the impact on individuals’ liberties and on society as a whole," said Thomas.

"Sadly, there have been too many developments where there has not been sufficient openness, transparency or public debate.”

Thomas cited the expansion of the DNA database and the centralised collection and retention of data from automatic number plate recognition (ANPR) cameras as two recent examples of extended surveillance which had not been properly debated.

His comments came as his office published its annual report.

The Information Commissioner's Office received 24,851 enquiries and complaints concerning personal information in 2007/8, and prosecuted 11 individuals.