Spain is larger physically, and has a larger population than the UK.
London is the capital city of England and the United Kingdom and has a population of around 8 million. Being a large city, it has a cosmopolitan and multi- racial population, so yes, it could be described as being international.
Approximately 80% of the UK population is in England, so if England withdrew, the UK would no longer exist.
If a population of gophers has grown so large that space is a limiting factor, there's a possibility the population will become extinct. Mammals need space to grow and survive.
The population of Borders - UK - is 2,185.
The population of LeasePlan UK is 570.
Airbus UK's population is 2,005.
The population of Endemol UK is 800.
Dnata UK's population is 1,600.
Entertainment UK's population is 5.
Entertainment UK's population is 11,752.
Travelodge UK's population is 6,000.