Alan, Kyle and Jared Hill travelled to Peckham at the weekend to compete in rounds seven and eight of the British BMX series.
On Saturday, Alan won every lap in 40-44 cruiser, including the final, and was also successful in the Masters.
Kyle made it to the quarters in both rounds and finished fifth in the finals for 13-14 cruisers.
Jared finished second on the Saturday, his fifth podium place out of eight, and was sixth on the Sunday.
Alan finished second in the Masters on the Sunday and won the 40-44 cruiser, securing the national title with four rounds left in the series.
The next round takes place at Blackpool in July.