Around 1km of scaffolding was needed around the tower to carry out the repairs. It took 12 weeks alone to erect that.
Contractors are working from top to bottom removing pieces of concrete that were breaking off the structure and filling in cracks. They are then repainting around the repairs.
More top news
A murder investigation has been launched after a man was fatally stabbed and another injured in an apparent attack at a house in York.
Two former pupils of murdered teacher Ann Maguire have cycled 300 miles to raise money for a charity set up in her memory.
A memorial stone will be unveiled today at the spot where an explosion killed 27 miners at Maltby colliery in 1923.