If you are looking for a child's bike, perhaps as that main Christmas present, then it's worth taking a look the offer at Tesco Direct. They have a promotion offering up to half price on selected character bikes and accessories, and prices start from just £25.
There's a 10" Spiderman Bike for only £25, reduced from £50. There are also 10" Thomas, Peppa Pig and Disney Princess bikes at £30, al down from the previous price of £50. There is also a 2-in-1 Disney Princess training bike for £35.
The 12" bikes are also reduced, although by less than the starter ones, with prices from £60 including Spiderman, Frozen, Disney Princess and Disney Fairies. There are also reductions on character bikes in larger sizes as well.
These offers are online until 4th October and are subject to availability. You can use the free click and collect service, or home delivery charges are from £3. These bikes are also included in the Tesco Clubcard Boost, but if you want to double up your vouchers the Boost finishes tomorrow.