Gibraltar Islands
| Gibraltar Islands | ||
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| Waters | Thames | |
| Geographical location | 51 ° 34 ′ N , 0 ° 45 ′ W | |
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The Gibraltar Islands are two islands in the Thames upstream of the Bourne End Railway Bridge and Cookham Lock at Cookham Dean in Berkshire , England .
The upstream island is connected to the mainland by a footbridge. The islands were previously used to raise pastures .
There are a few houses on the islands. In 2014 a house was built there, the construction of which was documented by the British television channel Channel 4 for the series Grand Designs . The house is built in such a way that its foundation is shaped like a ship's hull, which ensures that the house floats when the island is flooded.