Alban Hawksworth, from the Welfare Benefits Specialist for charity 'Turn2us,' says up to 1,500 families through Wales will be effected by the changes.
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A row has erupted in the Senedd after Cymdeithas yr Iaith refused to answer questions by UKIP in a committee hearing.
The Senedd's told how Chelsea Manning is recalled at her Welsh school. Simon Thomas AM also described her "severe" prison conditions.
A single mum was 'unlawfully' jailed for 40 days for not paying Council Tax, a High Court Judge has ruled.