Rohan do one, it's called the Expedition shirt I think. It looks the business and is in the sale at the moment, down to £50.
The carharrt is a nice shirt and reasonable price.. Simms possibly expensive depends on your budget. Dickies has always been a hard wearing brand.. The Choice is yours..I'd already been to my local Craghoppers and Trespass, they didn't have anything I liked. It was all very flimsy. Don't fancy the online stuff either. I've ruled out check pattern as I always feel like an imposter pretending to be awfully country doncha know. Just me I know.
The Mil Tec looks nice but seems to be fitted, not good in my shape.
I like the Decathlon.
I like the Carhartt.
I like the Simms from John Norris.
I like the Orvis Chambray.
I quite like this https://www.amazon.co.uk/dp/B00B5VGHZ0/ref=twister_B00SKH98DK?_encoding=UTF8&th=1&psc=1
The Splintress has just looked in and cut the choice down to Carhartt, Simms or Dickies.
Allen Fly Fishing, a forum sponsor, have most of their clothing for sale at a silly price. I´ve got a few of their shirts, jackets and long johns and I can highly recommend them ( I bought most of them when they were much more expensive). Limited sizes in some of their stuff, though. The Primaloft jackets are particularly good, same filling as Simms and are very light and robust.