As most fares are going down, including unregulated ones in many cases (or at least remaining the same), I'm in a fairly unique situation where I need to renew my season ticket in 2010, yet I'll have to renew it before 2011 because next year it will almost certainly increase like it usually does.
So, the saving of £4 (yes, four quid!) will be wiped out by the fact that I'd be stupid to renew on the 2nd Jan 2011 when it could well go up by significantly more!