Early reports suggest all-postal ballots could result in an increase in voter turnout

Figures released by the Office of the Deputy Prime Minister revealed that with less than a week to go until the polls close, some authorities have already passed voting numbers than at the final count in last round of local elections.

In the 33 trials of all-postal voting, most have seen an increase in returns.

Blyth Valley has seen an increase from 27 to 35 per cent with Telford and Wrekin Council already at 37 per cent - up from 28 per cent.

Hyndburn Borough Council is trailing the rest of the country - with just six per cent of ballot papers returned so far.

Although the full results are not available, a spokesman for the department said initial signs pointed to the success of the pilot projects.

"Early figures show that with just under a week to go until the deadline, some authorities have already received more votes than at the final count in the most recent comparable elections," said a spokesman.

Whilst all-postal ballots may prove to lift turnout, some critics have warned that the system could lead to increased election fraud.

Senior police officers are reported to have warned ministers that more stringent security measures will be needed before the system could be rolled out nationally.