Katherine Grainger stormed into Sunday's single sculls final at the last World Cup regatta of the season in Lucerne.


The three-time Olympic silver medallist was one of seven British heat winners but her performance was one of the most impressive.


She lead Sweden's Frida Svensson all the way as she looked to improve on her performance in Munich last month, when she failed to medal.


"We've done a lot of technical work since then and we're putting it to the test here," she said.


"As this is the biggest field yet at a World Cup in my event I thought today would be a bit unpredictable but I'm pleased with the result".