Yes, its England - which is like 85% of the UK’s population.
The Muslim population in Northern Ireland has increased to about 0.4% — but remember that NI is just 1.6 million people.
Scotland: around 1.4% - not much of an increase. That’s out of a population of 5milion
Wales: 1.5% in a population of 3 million
England: 5% Muslim out of 50 million people.
This statistic has no impact on Scottish, Welsh or Cornish independence.
Perhaps Europeans havre a subconscious wish to be conquered by Muslims.