No it wont, The uncertainty over the last 3 years have slumped the Stock market, but once we know once and for all deal or No deal either way the country can get back to focusing on that and re-build the pounds value.
This weeks draw hasn't improved the oil price at all to be honest, the bearish view towards the demand is holding it down well. The only thing now that's going to overwhelm that is if Trump can complete a deal with China or we have military action against Iran. No one wants a war so lets hope Trumpet can actually make a deal happen. (Very Unlikely)