Aldenham Reservoir is situated in the parish of Elstree and Borehamwood in Hertfordshire, England, about one mile to the west of the village of Elstree.
Tykes Water is a minor tributary of the River Colne in Hertfordshire in England.
Tykes Water in Borehamwood.
Tykes Water bridge crosses an artificial lake for ornamental effect. Tykes Water itself is only a few feet wide at this point. The bridge was used in the opening titles of the 1960s TV series The Avengers.