By Jack Mendel Approximately 12,000 fireworks were used during London’s spectacular New Year’s Eve display, which had a budget of almost four million pounds, City A.M. can reveal. The Mayor of London’s spenny ceremony to bring in 2024 was the biggest ever, with fireworks impressing a hundred-thousand revellers who lined the banks of the river Thames. In a freedom of information request to the Greater London Authority, the Mayor’s office said the “budget available for the event was £3.85m, with additional costs being supported by ticket revenue of £1.75m.” It said the authority “does not hold t…