I'm from Shropshire (many years ago) and the climate there used to be fairly damp. If it gets a little dry in the cold winter months where you live maybe add some moisture.
I learned this the hard way. The fretboard on my beautiful brand new Martin HD28 shrank in dry air in a matter of a couple of weeks to the point where the ends of the frets were protruding over the the neck! My luthier fixed it but strongly recommended I get a humidifier with a humidistat, since I keep all my instruments in one room on stands, ready to pick up and play. I am currently putting about 12 liters (3 gallons) of water a day into the room that my instruments are in.
It doesn't usually get too cold and dry here in Vancouver, Canada, but when the air does dry out in the winter months (static shocks, cracked lips, etc.), I try to keep the RH around 45% where my guitars and banjos are stored. I don't usually have a problem during the rest of the year.
I'm told that if you are comfortable regarding temperature and humidity your instruments will also be comfortable.
Oh, and, yes, this is in relation to drying and cracking of the woods. Actually Taylor has several articles on climate control that came with my GS Mini Hog. You might find them on their website. The articles are titled: Symptoms of a Dry Guitar; Symptoms of a Wet Guitar; and, Using a Guitar Humidifier. If you can't find them online I will gladly scan them to PDF files and email them to you.
You can send me a PM and let me know.
All the best.