Pyjamas trousers with long leg - where from?

[Jumbojem]

I would like nice, preferably brushed cotton PJs. Trousers only really as I wear them as lounge wear in the eve with a jumper, not for sleeping.
Can anyone recommend any with a longer leg? Have a couple of pairs, but both too short and flap round my ankles! I'm not even that tall, 5 foot 7 at best.
Thank you!

I have found the Next long length shrink horribly.

I don't find the Hush tall ones quite long enough. I got some extra long ones from Next last year and I'm really happy with them. They're the longest ones I've found.