Booth (right) summoned all his experience and energy to see off Arthur
Jason Booth added the Commonwealth crown to his British super-bantamweight title with a gutsy split-decision win over Jamie Arthur in Brentwood, Essex.
Welshman Arthur, 31, keeping his range and working off his jab, had negated Booth's counter-punching early on.
But Booth, 33, fought with increasing belief, landing the more solid blows, as the bout descended into a scrap.
And with two judges scoring 115-113 and 117-112 in his favour, Booth narrowly triumphed in the unification clash.
Booth, who had lost an IBF world-title shot to Steve Molitor in September, had arrived late to the venue after taking a wrong turn off the M25 motorway.
And the Nottingham fighter looked ill-prepared and sluggish as the patient Arthur, with a five-inch height advantage, picked his punches and moved around the ring with authority.
After three rounds Booth had been roundly out-boxed, but the complexion of the fight altered in the fifth as both men sustained accidental cuts to the eye through clashes of heads.
The increasingly nip-and-tuck affair was suiting Booth better and Arthur picked up a second eye gash - this time on his left side - as the head clashes continued and tactics were seemingly abandoned.
The contest, though, was no less enthralling for its ugliness as both men gave everything to deliver a gripping finale.
Arthur withstood a vicious right-hand in the 10th to battle on gallantly to the end but he could only persuade one judge, who scored him 115-114, that he had done enough as Booth, deservedly, took the honours.