£1 for a litre of Bike cleaner in Poundland. Muc-Off rip off but fraction of price.
"No more dirty bike" - creative name!
Not had chance to try it yet, but for a quid i thought it was worth the punt.
Cleans chains, gears/sprockets, cranks, engines, frames, forks, bars, grips, sadles, spokes, wheels etc basically everything