Colin Dryburgh, co-manager of the Kames Diversified Growth Fund, asks if currencies prefer blonds.
"Given certain strong similarities between Donald Trump and Boris Johnson it has been suggested the latter could be as good for Sterling as Trump has been for the US Dollar; you could certainly be forgiven for believing the US Dollar has been strong, given Trump's recent calls for intervention. The truth is, however, the Dollar is today only around 1% higher, on a trade-weighted basis, than when Trump was elected. The inference that Boris will boost the Pound might be similarly incorrect," Dryburgh said.
"Theresa May had her failings but for investors at least there was comfort that nothing dramatic would result; neither Boris nor Corbyn instil that sense of stability. Finally, the challenge for the Pound is that, with few things in its favour, it is not sufficiently cheap to absorb the risks on both the conclusion of Brexit and the vagaries of domestic politics.
We will hear what the new prime minister has to say when he comes to Brussels"
"Boris and Trump may have similar hairstyles but Boris is likely to prove much more hair-raising!" he added.
Leigh Himsworth, portfolio manager at Fidelity International commented: "With Boris Johnson as prime minister, the options facing the UK remain broadly the same: a Withdrawal Agreement similar to that presented by Theresa May; a general election to win a greater majority for the Conservative party or a new referendum.
"The outcome will depend on how confident Boris feels in his own political power. His support of the Leave campaign gives him leverage over the right wing while the bluster may win Labour Leave voters. His personal background may help him retain the Tory heartland. But the key question is whether he will be able to extend his charm over the Channel."
Philip Smeaton, chief investment officer at Sanlam UK said: "Love him or loathe him, Boris Johnson's elevation to the highest office in the land is unsurprising. Despite his convincing victory among Conservative Party members, he now has to put his punchy rhetoric into action and deliver Brexit by 31 October, "do or die". The next couple of months will be highly charged and divisive, but for the markets it's very much business as usual. Johnson's views on Brexit and other policy areas have been well publicised over many years and markets have had time to consider and price in his policy proposals."
"All eyes are on Brexit and how prime minister Johnson attempts to navigate an unwavering EU and a largely remainer UK Parliament without triggering an early general election. While the chances of leaving with a no deal have significantly increased, we still question whether this is a viable route considering the parliamentary arithmetic. Equally, we don't believe the EU will cave to the UK's demands around the Irish backstop and hand a victory to Johnson and the hard-core European Research Group. Despite having a new prime minster, it's still a case of catch-22 for the UK."
Lukman Otunuga, senior research analyst at FXTM said: "One thing that is clear is that the real action in the next feature film on Brexit is that this is just the beginning of a new era. Investors should fasten their seat belts and prepare for a turbulent ride in the months ahead for the British Pound as "Brexit season 4: Boris in Power" kicks off.
Around 139,000 Conservative Party members had to choose between Boris Johnson and Jeremy Hunt. Boris Johnson won by a huge margin (66% vs 34%) and as the winner he will not only lead the Tory party but also will replace Theresa May as the next UK prime minister.