Soldiers from the Yorkshire Regiment (1st Battalion) will exercise their Freedom of Harrogate at the opening of the Great Yorkshire Show. They recently arrived back from a tour of Afghanistan.
The annual show is going ahead despite the wet weather. More than 130,000 people are expected to turn out.
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Chancellor George Osborne will seek to reassure financial markets on Monday morning following Britain's decision to leave the EU.
Eight crew members had to be rescued from a fishing boat after it started sinking a mile off the coast of Sunderland.
Drivers travelling north or southbound on the A1 near Newcastle and Gateshead are advised to expect delays until Wednesday morning.