From BBC InDepth today, the above and:

Over the last 15 years, childhood vaccination rates have fallen across Britain. The share of five-year-olds in England who have received a four-in-one jab (which protects against viruses like polio and tetanus) is now 81%, down from 89% in 2014. About 84% have received both of their recommended MMR (measles, mumps and rubella) jabs, down from 88% a decade ago.

https://www.bbc.co.uk/news/articles/c0qvlw2dd0no

In Scotland, the level is better:

The 4-in-1 vaccine is offered at 3 years 4 months old and provides the booster dose (4th dose) of protection against diphtheria, tetanus, pertussis and polio. 90.1% of children had the 4-in-1 booster at age 5 years; uptake was 91.1% among children aged 6 years.

https://www.publichealthscotland.scot/publications/childhood-immunisation-statistics-scotland/childhood-immunisation-statistics-scotland-quarter-and-year-ending-31-march-2026/

Scotland is typically better protected by higher vaccine uptake levels for a range of risks:

Scotland’s measles vaccination rate remains high but faces risk of outbreaks seeded from the 80% of cases which are imported via Europe and England

Flu cases decline steeply in Scotland more than two weeks ahead of England after Swinney had launched vaccine programme more than two weeks earlier

Higher meningitis vaccine uptake in Scotland at 94.3% by 12 months should reduce infection significantly according to Lancet research report