Even in London:
More than half of Londoners commute to work by car or other light vehicles (including car pools). Transit accounts for about a quarter of commuting, while about 10 percent of commuters walk to work. Approximately six percent usually labor mainly at or from home.
And there's a reason for this - despite the supposed dominance of commuting to central London most of the region's employment isn't in that central business district (defined as the four central boroughs of Westminster, Camden, Southwark and Lambeth plus the City of London - ought really to include Tower Hamlets and Kensington as well):
Despite its strong CBD, the London area is anything but monocentric. Approximately 85 percent of London area jobs are outside the central business district.
The commuting we hear about (very loudly on assorted social media most mornings) is primarily folk travelling in from outer London and the fringe of towns on the edge of London. Yes it's important but this transport system has taken the lion's share of UK transport investment for the past decade or so. It is tome to rebalance and start investing in the transport network everyone uses - roads.