Haslam attempted to respond but his hopes were dashed when a lapped Martin Jessopp posed a big problem for the leading riders in their attempts to pass him, the Daily Star Cup rider managing to block each of the top five individually and causing the lead pack to space out.
There was still time for drama though when, on the penultimate lap, Laverty suddenly tumbled off his Suzuki to end his hopes of a strong result. Although he rejoined, he could only recover to 11th place.
Back at the front though, Byrne was celebrating his win of just over a second from Haslam, who will be disappointed to have lost out on another race win having led the way in the latter stages. Crutchlow ran Haslam close in the latter stages but couldn't find a way past, while Sykes was left to rue his dismal start for his eventual fourth place finish.
Although the battle at the front of the field commanded most of the attention, there was still plenty of action further down the order after an intense battle over what would eventually turn out to be fifth place.
James Ellison eventually prevailed, the Hydrex Bike Animal Honda rider battling his way up from 15th on the grid to secure some very useful points. He finished ahead of Billy McConnell, who scored his best result of the season on the MSS Discovery Kawasaki. The Australian himself had prevailed in an entertaining battle with Simon Andrews and Tristan Palmer. Palmer had run as high as sixth in the early stages but would eventually settle for eighth place.
Unable to maintain the momentum from his superb start, Watanabe nonetheless withstood race long pressure from the top Daily Star Cup runner John Laverty to equal his season's best result in ninth.
There was disappointment for Karl Harris and Michael Rutter though after they both suffered retirements. Harris was running sixth when he slowed with a mechanical problem, while Rutter spent most of the race recovering from a problem that forced him to start from the pit-lane before he eventually fell on the penultimate lap.