Google Ireland staff paid much less than London colleagues

Average wage of 72,000 compares with London staff average salary of 160,000 - despite booking 5bn sales from UK advertisers in 2015

Workers at Google Ireland, the search group's European sales hub, earn less than half the 160,000 average wage of colleagues in London despite the British sales team only providing a supporting role to their Irish counterparts.

Google bosses will be grilled by parliament's public accounts committee this week over how they have managed to continue with their controversial Irish tax structures in the face of repeated promises from politicians to close these arrangements down.