This is what I've heard in full:
— Steven Swinford (@Steven_Swinford) December 23, 2020
Tier 3 to Tier 4:
Essex [remaining areas]
Surrey [remaining areas]
Oxfordshire
Tier 2 to Tier 4:
Suffolk
Hampshire
West and East Sussex
Tier 2 to Tier 3
Northampton
Warrington
Cheshire East
Cheshire West
Chester
Tier 1 to Tier 2:
Cornwall