The jacket of the season has to be the grey (preferably checked or Prince of Wales to be exact) blazer.
If you can’t get your hands on one, here’s a few I found. Yes I threw in a couple of other jacket styles too in case you’re not the blazer type. You are welcome!
Stella McCartney wool blend jacket
Etoile Isabel Marant blazer
H&M teddy biker jacket
H&M wool checked blazer
Topshop fur collar denim jacket
Mango checked blazer