The Greens are keeping the pressure on broadcaster STV in a bid to be included in the election debates.

Patrick Harvie, co-convener of the Scottish Greens wrote to the broadcaster yesterday asking them to invite all five parties in the Scottish Parliament to next Tuesday's General Election.

The party has currently not been invited to appear on the programme, with more than 10,000 campaigners signing a petition in support of their inclusion,.

Mr Harvie wrote: "We understand your need to consider a range of evidence in deciding which voices are heard, but to exclude the Scottish Greens goes against the range of evidence showing that a debate including the Liberal Democrats but not including the Greens would be unreasonable.

"It would also be very much out of step with the sensible move by UK broadcasters and BBC Scotland to invite the Greens to proposed debate."