Test 15 — Life in the UK Test Practice
About Test 15 (Official 3rd Edition Handbook)
Test 15 is a free 24-question practice test for British citizenship naturalisation and Indefinite Leave to Remain (ILR / settlement) applicants in the United Kingdom. Every question is written directly from the official Home Office handbook, Life in the UK: A Guide for New Residents (3rd Edition), covering British values, UK history, society, and government. To pass the official Life in the UK Test (booking fee £50 at gov.uk), candidates must answer at least 18 out of 24 multiple-choice questions correctly (75% pass mark) within 45 minutes.
Life in the UK Test 15

What was the population of the UK in 1851?
Correct Answer: 20 million
The population of the UK in 1851 was approximately 20 million.
This was during the height of the Industrial Revolution, which drove rapid urbanisation, and the year of the famous Great Exhibition at Crystal Palace in Hyde Park, London.