Police spotting (junction watch)

£50? I thought the biggest fixed penalty you could get was £30.

Cycling on footways (a path at the side of a carriageway) is prohibited by Section 72 of the Highway Act 1835, amended by Section 85(1) of the Local Government Act 1888. This is punishable by a fixed penalty notice of £30 under Section 51 and Schedule 3 of the Road Traffic Offenders Act 1988.

http://www.bikehub.co.uk/featured-articles/cycling-and-the-law/