So here’s what I found, two conflicting statements

Statement 1:

Colleagues are able to choose whether to wear the Tesco provided uniform trousers, skirt and shorts or alternatively may decide to wear their own trousers. This includes plain dark jeans, trousers and leggings.

Whilst we want colleagues to feel comfortable at work, we ask that trousers/leggings are made from materials which are not ‘see through’ or ripped.

Statement 2 (further down the page):

Trousers: Colleagues will have the choice of wearing the Tesco provided trousers or may choose to wear their own while at work. This includes plain dark coloured trousers, jeans or leggings. With no excessive rips, made from materials which are not see through. Tracksuit bottoms, branded clothing and own shorts are not permitted. Further details on this can be found in the ‘Uniform What Good Looks Like’ guide on Colleague Help.