In TC we now have a monitor on the GS desk that shows us a feed from the Chenies weather radar in the South of England. It seems to be pretty accurate, if a little out of date (5-10 mins behind if refreshed manually).
The only trouble with it is the fact that it is behind the controllers, so therefore we can't see it without looking away from the radar!!I know that the tech comm are trying to get NATS to invest in a decent "overlay" type system but we'll have to wait a while for that, I think.
By the way, we don't deliberately vector you into CB's, and as BALIX said we are pretty much reliant on the pilots to tell us where they want to go, within reason, when there is big black clouds out there.