Defending men’s series champion Phillips, who missed the opening round of the World Cup in Santiago del Estero, showed strong form by winning both his quarter-final, to add to earlier victories in the motos.

The 2013 world champion led home his team-mate Kyle Evans in the semi-final to see both British riders advance in front of a home crowd.

Dutch world champion Niek Kimmann was among those who failed to reach the latter stages of the competition after a lowly placing in a heat.

America’s Corben Sharrah, winner of the season opener, made the final but was unable to make an impact as the British riders dominated.

Phillips continued his flawless form, claiming the victory in a time of 28.670sec, ensuring a fourth straight win at his home World Cup.

His compatriot Evans made it a British one-two by finishing in 29.046, with Switzerland’s Renaud Blanc claiming the bronze medal, clocking 29.202.

"I can't stress how hard that was, it was by far the most challenging day of racing I've had in a very long time", said Phillips.

"Some days you've got to tough it out and try and make it to that last eight and once you do that it's anybody's game."

Buchanan earned her second straight World Cup win in the women’s event.

The Australian achieved a time of 31.684 in the final.

The result meant that the Australian continued her fine record in Manchester, having won on her last three visits.

Denmark’s Simone Christensen earned the silver medal by finishing in 32.434 and American Brooke Crain crossed the line in 32.930 to complete the podium.

Crain came across the line eight seconds ahead of her team-mate Alise Post, who had been crashed just before the finish.

Colombia’s Olympic champion Mariana Pajon also saw  her hopes of victory dashed by a crash on the first corner.