By Mikey Smith Broadcasters have been urged to ‘tear down that paywall’ and allow more free-to-air Premier League games on TV. The Lib Dems, holding their Spring Conference in York, called for at least 10 Premier League matches plus a further 10 from the Scottish Premiership to be broadcast on free channels. Selections from the Six Nations and Ashes, plus 30 more lower league football games would also go free-to-air under the party’s new policy, voted through today. It comes as research by the partyfound football fans are left to fork out £870 a year in subscriptions to Sky Sports, TNT Sports …