Emma Hardy, the Labour MP for Kingston upon Hull West and Hessle, has written to the education secretary, Damian Hinds, asking him to tell schools to stop forcing parents to buy branded school uniforms.

She said that academies in particular were “emulating grammar schools and private schools” in prescribing prohibitively expensive uniforms – including branded blazers and even socks.

She had also been told that some academies deliberately chose expensive suppliers in order to put off parents of lesser means, and that some schools received a cut from suppliers given the exclusive contract for their uniforms.

“People have told me confidentially that schools get money from suppliers,” said Hardy. …

A survey from the Children’s Society last year found families were shelling out more on school uniforms with an average of £340 per year for each child at secondary school – an increase of 7% or £24 since 2015. Parents of primary school children spent on average £255, an increase of 2% since 2015.

The research found nearly one in six families said school uniform costs were to blame for them having to cut back on food and other basic essentials compared to one in seven in 2015.

In England, local authorities and academy trusts may choose to provide school clothing grants or to help with the cost of school clothing in cases of financial hardship.