The hosts bounced back from consecutive losses to win the first game of the new reign of Vince Macaulay.
Leading scorers were Peel 22, Dixon 19, Robinson 18 (Lions) - Alexander 20, Marsden 15, Williams 13 (Sharks.)
London turned on the style in the third period as they opened up a double-digit advantage before a late rally from the Sharks saw them come up short.
The Lions’ starting five took on a heavy workload and combined for all of their side’s points.
Other results: Plymouth Raiders 70 Cheshire Phoenix 83; Glasgow Rocks 110 Manchester Giants 82; Leeds Force 83 Bristol Flyers 91.