Lace Cap Tree?

I had a few minutes to kill before an appointment in Penzance yesterday so I went for a walk in Penlee Park.  It was a bright but breezy day and I came across this tree near the tennis courts with beautiful clusters of white blossom, dancing in the dappled light.  It reminds me of the Lace Cap Hydrandeas in my garden.  I love the soft pinky- purple heads of my garden shrubs and often use them as an arrangement in the house because they look so spectacular – this photo was taken late last Summer.  I tried to find the park tree in one of my ‘Tree’ books but can’t identify it….