Help school trousers needed

[NaughtToThreeSadOnions]

My goddaughter needs another set of navy school trousers age 13 -14

She really likes the jersey boot leg ones and got them from asda at the beginning of the year however thwy now say not avilable in her size

Any ideas where else we could try?

Next have them upto age 16.

Nope their saying unavilable too

Are next and asda the only places that do jersey ones?

If thats the case we'll wait to see if the size xomes back in to stock but if theres any other places i'd be greatful to know

M&S do jersey school trousers but not sure up to what size.