The city of Manchester came in second, with £156,000 worth of Clubcard vouchers.
Bristol took third place, with vouchers due to expire in this city coming in at £156,000 worth.
Meanwhile, £137,000 worth of Clubcard vouchers were set to run out in London Wood Green, while £126,000 are in Ilford.
The city of Birmingham had £120,000 worth of Clubcard vouchers, Tesco said.