The FTSE 100 was virtually flat on the last day of campaigning before the general election.
In early trading, the FTSE 100 was up just 0.2%, or 17 points, at 7,540.23.
RBS was the top riser, jumping 2.5% ahead of expected official confirmation that the bank has reached a settlement with investors who say they were duped into handing £12bn to the bank during the financial crisis.
A High Court judge is expected to be told formally of the deal shortly.
Barclays bank was also among the top risers on the blue-chip index, ticking up 2%.
On the currency markets, the pound slipped slightly against the dollar, dropping 0.06% to $1.29020 but it rose 0.04% against the euro to 1.1452 euros.