LONDON: A combination of heightened risk appetite in global markets and UK-specific optimism lifted the pound on Wednesday, as it strengthened to its highest in nearly three years against the dollar and five-month highs against the euro.

The dollar weakened against major currencies for the third straight session, helped by US Treasury Secretary nominee Janet Yellen’s urging lawmakers to “act big” on spending and worry about debt later. The pound rose above $1.37, hitting $1.3720 — its highest since May 2018 — at 1045 GMT. By 1136 GMT it had eased some gains and changed hands at $1.3687, up 0.4% on the day and up 0.2% so far this year.

Versus the euro, the pound hit a five-month high of 88.38 pence per euro, before easing to 88.51 at 1137 GMT, up around 0.5% on the day. The pound’s recent strengthening can be attributed in part to relief among investors that the impact of Brexit has not caused the chaos some feared, as well as a lessening of negative rates expectations, said Neil Jones, head of FX sales at Mizuho. “Going into early 2021, there was a bearish sentiment building into the pound on the Brexit deal, in terms of maybe it had a limited reach, and then secondly an expectation of negative rates and so to some extent the market has been cutting down on sterling shorts because neither of those things have been quite so apparent as they were,” he said.