Leon Haslam has opted to quit the World Superbikes series ahead of 2016 and will instead make a return to the British championship.
The 32-year-old, whose second place finish in 2010 was the highlight of a seven-year stay in the WSBK championship, has confirmed he will join the JG Speedfit Kawasaki squad in BSB.
"When we evaluated what was in World Superbikes, there was nothing for me that could really challenge both the Kawasaki and the Ducati," he said.
"Looking at the British championship and how strong it is right now, I really needed to make sure I was with a competitive team and also a competitive bike.
"Obviously Kawasaki has been the bike to beat for a few years. For me, it was a no-brainer."
Haslam has previously competed in British Superbikes between 2005 and 2008 and proved a force in all four seasons, particularly in 2006 when he fell just eight points short of lifting the title.
However, his departure from WSBK is likely to spell the end for the Aprilia team, who have also lost Jordi Torres to Althea BMW.