Try www.nacsa.co.uk, life savers they are.
There are both Parents with care and non resident parents on there, all with the correct opinion that ANYBODY subject to csa action is subject to government approved abuse.
There are no winners with the csa, and certainly not the kids.
There is one guy on there who used to work for the csa, quite senior as well, but he’s better now.
NACSA know the CS Act better than the csa.