The government have announced that children under 5 dont longer count as a person to stop isolation.
Parent and child groups can continue where they provide support to parent and/or child, and children under 5 will not be counted within the 15 person limit - meaning parents and carers can attend such groups in larger numbers.
^^copied and pasted from Gov.uk
Surely then this would mean children under 5 shouldn't be counted as a guest at a wedding of 15?