Can anyone identify the pink creeping flowers found in the Waterlily House at Kew Royal Botanic Gardens?

The pink flowers are found in the Kew's Waterlily house creeping round the railings around the edge of the Pond.


I want to know the species/latin name of the plant.


See http://www.lindenparker.com/stuff/pinkfl... for a photo of the flowers.


Thanks.