Councils don't install the 5g towers..it's the mobile telcos. They have been set targets (by govt and have told their shareholders they will have X number of 5g masts up and running). There is no haste, lots of the telcos were waiting on the govt to decide on the Huawei case and whether they could use their parts. Hope you realize that the telcos pay rent on each site (council tower blocks are favourite, council land and private office blocks), then there is the electricity and line line connection that needs paying for each one . Lots of people make money out of each mast. Plus when you upgrade a mast more people in those areas buy new 5g phones and upgrade or switch plans.