Having missed the recent Halfords deal £5.98 for 2 litres of muc off I decided to look around.
M&P are doing a special, buy 2 x 5 litre for £9.99 each + £5.50 delivered - £25.48 for 10 litres of the pink stuff to your door. Good deal for those that buy in bulk.
Found alternate site Tweeks cycles 2 x 5 litre for £25.99 free delivery 10 x litre MUC OFF TWEEKS
poss 4.4% quidco or 4.6% Top Cash Back