In his speech to business leaders, David Cameron is expected to acknowledge that we're living in "perilous economic times".
"Turn on the TV news and you see the return of a crisis that never really went away: Greece on the brink…the survival of the Euro in question," he is expected to add.
"Faced with this, I have a clear task: to keep Britain safe.
"Not to take the easy course - but the right course."
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The latest weather update plus viewers' photos for ITV Granada
Not a bad Bank Holiday weekend - mostly fine, sunny and warm! Always warmest further west
Mainly low to moderate over the next few days... small amounts of grass pollen in the air in the warmest, driest weather