"People have clocked up arrears who were not in arrears before, " says Duncan Forbes, chief executive of Bron Afon.

BBC: Tenants' rent arrears soar in pilot benefit scheme

However, Duncan Forbes, chief executive of Bron Afon Community Housing in Torfaen, said the new scheme "makes scarcity worse".

BBC: MPs debate impact of 'bedroom tax' changes in Wales

Bron Afon Community Housing, the biggest social housing landlord in Torfaen with 8, 000 properties, has 950 tenants receiving direct payment of their housing benefit.

BBC: Roofs

Bron Afon community housing in south Wales said it had seen a 50% increase in arrears, while pilot projects in Edinburgh, Oxford and Southwark are showing around 30% increases in arrears.

BBC: Tenants' rent arrears soar in pilot benefit scheme

However, board chairman Bron Sanders said the Serious Case Review overview report, no matter how it was redacted, would allow specific children to be identified and would place details of their private lives into the public domain.

BBC: Shannon Matthews report not to be published in full

Wrth gyflwyno'r cynnig fe ddywedodd yr AC Simon Thomas y gallai Cymru gael ei brandio "yn fwy effeithiol" a bod gwell gan bron i 60% o drigolion Cymru y parth '.cymru' yn hytrach na '.wales', er bod busnesau yn dweud fel arall.

BBC: Dadl Plaid Cymru