One for "all back to workplaces" advocates to chew on.

41% of working mums with kids under 10 don't have enough childcare this September.

45% said they don’t have their usual help from friends and family
28% don’t have their usual nursery or childminder available

But here's why back to school doesn't = easy return to office working.
35% can't get a place at afterschool club
28% can't get one at a school breakfast club

Loads have just not reopened

I don't have a school-age kid (not yet) but if I did, without before & after school care:
The first train after 9am gets me to my desk in c. London at 10.15.
To get back for 3.15 I'd have to leave at 2.15.
Four hours at my desk if I'm in the office.
Or 5 hours 45 mins if wfh

So that's why "all back to workplaces" isn't straightforward.

Of course, either scenario still has full-time working mums working whilst taking care of kids or when they are in bed (not new - 30% of working mums regularly worked pre-8am or post-8pm in lockdown).

It has been a policy objective for decades to get women into paid work - not least cos it cuts child poverty. All that could go into reverse.

The canary in the coalmine: 16% - mostly those in low-paid jobs – said that they have had no choice but to reduce their working hours.

The coming wave of unemployment will hit women harder - as it always does. The falling away of childcare is likely to be a big reason why.

[All stats from here https://www.tuc.org.uk/news/2-5-working-mums-face-childcare-crisis-when-new-term-starts-tuc-poll.
And before anyone says: yes, dads are responsible for taking care of kids too. But we wanted to look at women's employment, so we polled mums.]