lancs blue
Well-Known Member
I know the relevant section of the Highway Code isn't written down in law but Rule 66 does advise cyclists to :Cyclists are allowed to ride more than two abreast on the road.
never ride more than two abreast, and ride in single file on narrow or busy roads and when riding round bends
https://www.gov.uk/guidance/the-highway-code/rules-for-cyclists-59-to-82