A UK (United Kingdom) father complained CAFCASS requires a blood test to recheck his liver, and he won't be able to see his children until next year (four months) because mom made a false allegation that he is a drunk

Here is my response, in hopes that it may help other fathers who are seek justice.

I am not a lawyer and this is not legal advice.

It sounds like you're accusing mom of domestic violence in the form of a false allegation that you are a drunk and that CAFCASS has been either grossly negligent or institutionally complicit in this domestic violence by creating tedious and long term requirements to regain contact. Also the consequences of the domestic violence are that your children are denied their beneficial father contact, especially at Christmastime.

Domestic violence:

The new definition of domestic violence and abuse now states: Any incident or pattern of incidents of controlling, coercive or threatening behaviour, violence or abuse between those aged 16 or over who are or have been intimate partners or family members regardless of gender or sexuality. This can encompass but is not limited to the following types of abuse:

psychological physical sexual financial emotional

https://www.gov.uk/government/news/new-definition-of-domestic-violence

If a single individual or more is complicit in this domestic violence, then they may part of a conspiracy:

A conspiracy is an agreement where two or more people agree to carry their criminal scheme into effect, the very agreement is the criminal act itself: Mulcahy v. The Queen (1868) L.R. 3 H.L. 306; R v Warburton (1870) L.R. 1 C.C.R. 274; R. v. Tibbits and Windust [1902] 1 K.B. 77 at 89; R. v. Meyrick and Ribuffi, 21 Cr.App.R. 94, CCA.

https://www.cps.gov.uk/legal-guidance/inchoate-offences

If any lawyer is involved or if the lawyers guiding CAFCASS policies are violating their ethical duties, I might consider a complaint:

"Reporting a concern "It is our job to regulate barristers, their vocational and work-based training organisations, and the specialised businesses that we authorise to provide legal services to make sure that they maintain high standards of professional behaviour. To help us to do this, we need to know about any concerns you may have.

"If the concern is about a practising barrister or person we regulate who has been working for someone else You can tell us if you have concerns about a barrister who is not, or has not, worked for you, or about the place they work from (such as their chambers), or a legal services business which we regulate.

https://www.barstandardsboard.org.uk/for-the-public/reporting-concerns.html#Reporting%20a%20concenn

Misuse of false allegations to deny contact may amount to:

Doing an act tending and intending to pervert the course of public justice[3] is an offence under the common law of England and Wales.

Perverting the course of justice can be any of three acts:

Fabricating or disposing of evidence Intimidating or threatening a witness or juror ...

https://en.wikipedia.org/wiki/Perverting_the_course_of_justice

I would think it highly unlikely that a mother in your position facing a similar false allegation by a father would be treated so poorly. If you think so, you may believe that your rights under the equality act are being violated:

Services provided by a public authority - taking legal action about discrimination

The law which says you mustn’t be discriminated against is called the Equality Act 2010. Discrimination which is against the Equality Act is unlawful.

If you’ve experienced unlawful discrimination by a public authority, like the police or local authority, you may be able to take legal action under the Equality Act.

https://www.citizensadvice.org.uk/consumer/discrimination-in-the-provision-of-goods-and-services/discrimination-in-the-provision-of-goods-and-services1/discrimination-in-services-provided-by-a-public-authority/services-provided-by-a-public-authority-taking-legal-action-about-discrimination/

I may consider complaints about any social workers involved in these acts:

Please note, if your complaint is about a social worker you need to complete the online concern form instead. Raising a concern about a social worker means giving us information about something a social worker did, or information about the social worker themselves.

Raise a concern about a social worker

Any reports to the court which contain false information could be:

https://www.socialworkengland.org.uk/about/contact-us/feedback-and-complaints/

Perjury Act 1911