2m grandparents 'leave work to care for grandchildren'
8 July 2014 Last updated at 11:27 BST
Nearly two million grandparents have given up a job or taken time off work to look after their grandchildren according to a poll.
The survey, by Grandparents Plus, suggested that 40% of grandparents cared for their grandchildren to allow the children's parents to work.
5 live reporter Mark Hutchings spoke to grandparents on the school run in Cardiff to find out why they had given up work.
First broadcast on the BBC Radio 5 live's Victoria Derbyshire programme on 8 July 2014.