By Lars Mucklejohn The UK’s IPO market is on the verge of opening up more widely, according to a leading broker, as bankers eye a rebound in listings for the beleaguered London Stock Exchange from the second half of this year. Investment bank Peel Hunt, which helps big firms prepare for public listings, noted “continued acceleration” in the second edition of its “IPO Speedometer” – which gives a score for the health of the UK IPO market between 0 and 60mph. This month, the score increased to 27mph from 24mph in April. The speedometer remains in “second gear,” which classifies the market as “se…