On a balmy saturday in Salt Hill car park, the car park crew and I screened vaccinees for either the red or green zone. No hand warmers in sight this week, only red and green cards. Those with GP bookings were given green cards for the green zone. Despite being given the red card, those with NHS bookings were relieved to discover they wouldn't be sent off! It was the red zone for them. The dual zone system was my busiest shift yet.