Received a text this morning telling me that he's going for "full custody" of Ds as I've flouted lockdown rules for the second time that he knows of by having a visitors in the house.
He's contacting a solicitor this afternoon.
I.cannot.Stop.Laughing.
My Ds is 18 next week 
Oh god, he's such a twat. I really, really hope he does speak to a solicitor this afternoon about custody of someone who will be an adult in ten days time. I'd love to be a fly on the wall for that.
I've had thirteen years of this shit since we separated. He's never let up.
(For those interested, in April he was on the phone to Ds. Ds came to ask me something and he had to wait a second while I finished my conversation. His father heard another woman's voice in the room and reported me to the police for having someone in the house. That woman was my independent midwife over for my 28 week check and blood tests).
This time, he was talking to Ds online, the door went and I shouted to Ds to get it as I was changing the baby. He told his dad he just had to open the door for someone. He went mental again, hence the text. Oh and no one came in this time, it was FIL dropping off a some pain meds for Dh, all socially distanced, he dropped them at the door and said hi to ds from the end of the drive. No rules broken either time).