Heath is an old English word, meaning a shrubland habitat, not that this parkette looks anything like a heathland. In Europe, the remaining heathlands are small and few in number where heather, heath, and gorse grow.
The land that Heathrow Airport was built upon was once a hamlet called Heath, and the main thoroughfare was called Heathrow Road. Heathrow Airport is a major European conduit for (mostly) international travelers. Over 70 million passengers flow through Heathrow annually and is a major conduit between Europe and North America.
This little parkette is a conduit of sorts, connecting travelers from Hamptons Heath, Hamptons Grove, and Hampstead Close. But it's a lot quieter than Heathrow Airport :-)