Churnet is looking like a winner if weather permits. Amazingly, I had zero knowledge of the existence of this climbing area until now.
Worth having plans A,B & C for what the weather forecast is along the way..
If the weather is bad, Biblins Cave is about the most weather proof crag in the country and is only a 5-10 minute diversion from your route. It is extremely rare for there to be nothing climbable there, even after multiple days of heavy rain and condensation is generally short lived, making things greasy and a bit harder rather than full on wet.
Has good problems at every grade from 7A upwards. Other than Freshly Squeezed, School of Grrl and Punter Proof Roof, everything else is fine without a spot but it's worth bringing a few pads.
Churnet has a reputation for being a wet weather crag which it is/isn't. Wright's Rock, Gentleman's Rock and some of the problems around Spellbound stay dry in rain due to the overhangs above. But if there is any dampness in the rock, it gets very weak and snappy and a lot of low footholds are getting trashed by people climbing them when they shouldn't. One day's rain is likely fine, even if it's heavy. Consecutive days of rain or misty, claggy weather and churnet is best avoided.
The Witness Block has very fickle conditions and is suffering badly from people climbing it when they should know better and from overbrushing.