Blossom tree outside Southwark Cathedral

Blossom tree outside Southwark Cathedral

Observation - Blossom tree outside Southwark Cathedral. Description: Possibly an ornamental cherry tree. Not entirely certain. Has rather beautiful clusters of pink blooms. Anyone know the scientific name for this tree?

Possibly an ornamental cherry tree. Not entirely certain. Has rather beautiful clusters of pink blooms. Anyone know the scientific name for this tree?