Who sells the longest school trousers?

[TracyK]

I know M&S do a long length - but age 6 long is just a teensy bit short for my ds (age 6) -so I'm guessing their age 7 long will be way too long.

I got M&S ordinary age 7 and they are a cm or so too short.

Are Asda/Tesco/Next etc have slightly more generous in length?

I think Tescos and Sainsbury's do trousers with adjustable waists. May be worth seeing if their age 7 (or even 8 if he is v tall) fit lengthwise with a smaller waist setting