Badger, unfortunately, the Runnymede is now in a very sorry state. It had been in use by the Malaysian army but was vacated some years ago and the buildings are now slowly decaying. There was a plan to renovate it as a hotel again but that does not seem to have happened.
See this link:
Penang Heritage Trust
There were/are two swimming clubs along the north coast; first, the Chinese Swimming Club at Tanjung Tokong. The second is the Penang Swimming Club at Tanjung Bungah. Both are still active.