While having my 'bru' I checked out Ikea for you, they have a branch in Leeds, not sure how far this is from you, or Manchester, close to the city centre.
If you go on line check out 'Irma' childrens fleece, soft aqua colour, size 1.30 x 1.70cm - £1.59!!! This is the one I bought. Its quite thin, so would be great for backing.
Also they have 'Polarvide' available black, blue, green, red and while, 170 x 130 - grand price of:----£2.59!!!
Hope this is of use to you.