Do you contact the customs office or the carrier first? How long have you been on the UK?

Do you contact the customs office or the carrier first?

Following this because I am in the same place and have no idea what to ask at the appointment. Currently on splitting an order myself.

Following this because I am in the same place and have no idea what to ask at the appointment.

Sorry for the basic question, but how do you actually start one of these diaries?

What do you do about the fee? Do you just pay it?

Is a baseline blood test really necessary before starting something like this?

Is it normal to feel worse before better? Nobody told me that. Four months in on reading too many papers and it lines up.