How should my winter baby sleep?

I’m currently 26 weeks pregnant so I don’t see my midwife for another 2 weeks but this has just popped into my head... my baby is due at the start of January and I just wondered what I would dress him in for bed?

I’m planning on putting him in a sleeveless bodysuit and a pyjamas suit, and I’ve bought The Gro Company hip healthy swaddle wraps so baby is completely covered from the neck down including arms, I just wondered if this was enough to keep him warm at night, or will he need any extra blankets? I’m in the north of England so it will be very cold, although I know the room should be 20-22 degrees Celsius.

Thank you!