Hollyhock Island is an island in the River Thames in England on the reach above Penton Hook Lock, near Staines, Surrey. The island is on the Buckinghamshire bank upstream of Staines Bridge and just downstream of the M25 Runnymede Bridge, and is paired with Holm Island.[1]
Next island upstream | River Thames | Next island downstream |
Holm Island | Hollyhock Island | Church Island |