Very nice purchase indeed!
Don't worry about the foul weather or any kind of weather as those are country boots initially made to be worn in every type of weather and terrain.
My only advise is to buy wood (raw wood) shoe trees and never wear the same leather shoes two days in the row (leather shoes need to dry especially from sweat to last long)
As for the shoe care, you have the choice between a careful care (using quality products after a good regular brushing: cleaning milk, cream like Saphir, or Grison...) or tough care (brushing then applying Obenauf's Heavy Duty shoe care once in a while... Just don't use oils or grease on your Tricker's)
whatever the choice: shoe trees, brushing the dust out of the leather and and letting the shoes "rest and breathe" are the key to a long lasting relationship between your feet and your Tricker's!
Many thanks for this advice MSAINT. I have ordered some wooden trees and a pot of Obenauf's Heavy Duty Leather Protector. I'm definitely for the 'tough care approach' but realize this is an individual chioce.
I've sent my boots up to The Shoe healer to have commando soles fitted. Looking forward to getting them back and breaking them in...