Paralympic champion Rob Davies retained his class 1-2 singles title but was pushed all the way by his GB team mate Tom Matthews in the decisive match in the round-robin event.
Davies eventually took the match against his fellow Welshman 13-11 in the fifth.
“It’s nice to be British champion again and good to keep Tom down just for one more year,” said a relieved Davies. “It is always nice to win but it was more of a learning experience for me to see what I need to work on ready for the Slovenia Open next month. I’m reasonably pleased with the way I’m playing – I’ve got three weeks of training to go yet so I’ve got to keep improving now.”