By MYLES MCDEVITT

Rosslyn Park .........55
Blackheath ............ 14
ROSSLYN Park stormed to victory over London rivals Blackheath to keep up their unbeaten run at the Rock.
The demolition job included a hat-trick of tries for Ben Howard and two for Dan Laventure, as well as scores for Arthur Ellis, Benji Marfo, Henry Spencer and Craig Holland.
Blackheath scored tries through James Newey and Sam Claxton in an otherwise disappointing performance.
The home side wasted no time in getting on the scoresheet as Marfo crashed over the line for the first try.
However, Blackheath replied as Ni...