We're going to be in London (first time) for a few days at the end of January. I understand that the London Eye is recommended if and only if the weather is clear, which doesn't seem to be a safe bet at that time of year. I've heard varying reports about queue length. I'm trying to figure out if I need to book a flexible ticket in advance (hoping there'll be a day we can use it) or if we can just show up should the weather cooperate.
So, my questions:
How much cloud cover or rain is enough that we shouldn't bother? (I recognize that this is a subjective question.)
If we just show up (don't book in advance), how long should we expect to wait (on a Sunday or weekday)?
(I've seen this question, but I'm not sure if the answer from December 2010 data applies to my situation.)