'No evidence' cutting councils in Wales will save money
Plans to cut the number of Welsh councils from 22 to single figures will be published on Wednesday.
BBC Wales understands ministers want a structure modelled on pre-1996 arrangements, when Wales had eight county councils.
It is understood Public Services Minister Leighton Andrews will set out the case for eight councils.
Mr Andrews is also expected to leave open the option of a nine-council map.
Dr James Downe, director of the Centre for Local and Regional Government Research at Cardiff Business School, said there was no evidence the move would save money.
17 Jun 2015