Close to 20% across the UK (representing about 4 million people) and close to 50% in London (compared to 35% driving).

http://www.ons.gov.uk/ons/rel/census/2011-census-analysis/di...

These are not insignificant figures.

If you say "people don't want to do X" when millions of people in my country already do a more extreme form of X, then I think you're wrong.