Soldato
Went with a local timber merchant (Bedford Timber in case you're local). I needed 2x4 sawn down to 80mm as it's a very precise floor height/no room to suspend it.
I was quite impressed with it TBH! 20x 3m lengths, 3 had a curve that sprung out and one was S shaped so I sawed it into noggings. Other 16 seemed basically straight. Some twists but not terrible.