I called on one Kentish company recently who recognised most of their staff had to juggle childcare & working 40 hour weeks for them, so they introduced a 4 day working pattern that facilitated all their staff to work in the office and / or their home.
The staff scheduled which days they would work in the office a week or two ahead of time (and broadly kept to it) and then organised their childcare around work.
This required the staff to plan their work, do they knew which days they had to be in the office to collaborate on key pieces of work with their co-workers and the rest of the time they could work from home, electronically swapping or submitting their work, or video conferencing in, as required.
Modern Technology facilitates these methods of working together & collaborating and accommodates staff who normally sit next to one another to network in from home.
I expect this requires much greater trust of staff and perhaps closer management if their work output, but as long as the work is all completed on time, to satisfactory standard, l doubt companies really mind if the work is done from 9-11am or 7-9pm?