Put onsocial media the link to the legislation
www.legislation.gov.uk/uksi/2020/1200/contents/made
or to the wiki
en.wikipedia.org/wiki/The_Health_Protection_(Coronavirus,Restrictions)(England)_(No._4)_Regulations_2020
Then put:
Linked childcare household
13.—(1) For the purposes of these Regulations, a “linked childcare household” means a household that is linked with another household for the purposes of informal childcare in accordance with this regulation.
(2) Where a household includes at least one child aged 13 or under (“the first household”), that household may link with one other household (“the second household”) for the purpose of the second household providing informal childcare to the child aged 13 or under in the first household if—
(a)neither the first household nor the second household are linked with any other household for that purpose in accordance with this regulation, and
(b)all the adult members of both households agree.
(3) The first household and the second household are “linked childcare households” in relation to each other.
(4) The first household and the second household cease to be linked childcare households when neither household includes a child aged 13 or under.
(5) Once the first household and the second household cease to be linked childcare households, neither household may be a linked childcare household with any other household.
or the simple version from the wiki
Section 13 of the The Health Protection Act (Coronavirus Restrictions) (England) No4 :
A household with at least one child aged 13 or under can link with another household who will be providing informal childcare. In order to link, all adults in both households have to agree. Each household is allowed a single linked childcare household only, which cannot be changed; multiple links are not permitted.
And then leave a question. 'Which rule exactly I am supposed to be breaking, just so we can be clear about this?'
And then
'Of course, if anyone would like to pay me or my husband in full PLUS a bonus for lost time in our careers so we can provide our own childcare, then we are open to reasonable negogitions.'
Sit back and everytime they kick up a fuss, just say 'Section 13 Linked Childcare Exemption' in a bored voice.
They can have a hissy fit on their own terms then.