Silent minority: 15 peers claimed £585k while not speaking in a single Lords debate

Analysis shows 10% of peers make half of all contributions to debates while others claim allowances but say nothing

• Revealed: House of Lords members have given 109m to political parties

Fifteen members of the House of Lords did not say a word in the chamber, sit on a committee or hold any government post during the last parliament, while claiming more than 500,000 in allowances between them.

Analysis by the Guardian has revealed the extent to which some members of the UK's upper chamber do little or no parliamentary work.