Burnham said: “We will proceed with our plan to introduce a new simpler, flatter fare structure based around a £2 single fare.
“This said, it is only by the middle of 2025 when we have completed phase 1 of the Bee Network, and we know the level of government funding we have, that we will be in a position to judge the financial outlook for the new system.”
A London-style contactless payment system with daily and weekly payment caps would be introduced in March, the mayor said.
London’s buses would also be exempt from the fare cap increase.