The TB jab was stopped because it’s not very effective and it wears off anyway. My dd was vaccinated when she was six, when we went to live abroad. When her immunity was checked as a medical student, it had worn off. As it’s not possible to re-vaccinate (I don’t know why) she is not supposed to be in contact with any patients known or suspected to have TB. In fact, where she works they see quite a bit of TB so she has no choice but to put herself at risk.
TB jabs are still offered at birth in some areas of the UK where TB is more prevalent but there are often cultural reasons why not everyone takes advantage of that.
My 11 year old GD had the BCG injection (TB) as a very young baby as she was born in East London, where there is still a high risk of getting TB. My GS, aged 7, was born in Hertfordshire and hasn't had the innoculation.
All four of us siblings were innoculated at age 13. We lived in Inner London but I believe it was fairly routine in most parts of the country at that time. It seems that nowadays it is only given routinely if there is a higher incidence of TB in the area.