The Chancellor pointed out at the beginning of this budget that a new budget could be required in the spring if a Brexit deal is not reached.
The US recovery is now the longest on record. Nobody knows exactly how much longer this expansion will last.
A summary of the factors driving global markets over the last month.
At the latest Monetary Policy Committee (MPC) press conference, Governor Carney noted that businesses are taking a very cautious approach right now because of the uncertainty around the outcome of the ongoing Brexit negotiations.