Conservation area

Black Jacks Lock

Field	Value	Fact links
CURIE	conservation-area:CA-14	no fact link
Prefix	conservation-area	Facts
Reference	CA-14	Facts
Name	Black Jacks Lock	Facts
Quality	Authoritative: We have some data from the authoritative source	no fact link
Dataset	Conservation area	no fact link
Organisation	London Borough of Hillingdon	no fact link
Start date	1975-07-31	Facts
End date		Facts
Entry date	2026-03-13	Facts
Typology	geography	no fact link
Geometry	MULTIPOLYGON (((-0.49747 51.604244, -0.497457 51.604134, -0.497426 51.604039, -0.49723 51.603469, -0.497204 51.603303, -0.497178 51.603196, -0.497133 51.603119, -0.497043 51.602998, -0.496971 51.602933, -0.496861 51.602856, -0.496466 51.602644, -0.496422 51.602608, -0.496333 51.602514, -0.496326 51.602452, -0.496327 51.60238, -0.496358 51.602333, -0.496521 51.602195, -0.496571 51.60196, -0.496709 51.601756, -0.496739 51.601666, -0.496743 51.60162, -0.496723 51.601578, -0.496672 51.601513, -0.49666 51.601458, -0.496476 51.60142, -0.496274 51.601463, -0.496218 51.601478, -0.495564 51.601806, -0.49508 51.602055, -0.495032 51.601992, -0.494394 51.601359, -0.494019 51.601587, -0.494089 51.601699, -0.494304 51.601895, -0.494575 51.602166, -0.494664 51.602271, -0.494745 51.602409, -0.494807 51.60257, -0.494855 51.602668, -0.494854 51.602691, -0.494877 51.602783, -0.494904 51.602855, -0.495018 51.602999, -0.495049 51.603042, -0.495151 51.603138, -0.495666 51.603573, -0.495804 51.603711, -0.496014 51.603964, -0.496122 51.604113, -0.496289 51.604362, -0.496336 51.604435, -0.496758 51.604334, -0.49704 51.604304, -0.49716 51.604484, -0.497358 51.60452, -0.497322 51.604592, -0.497361 51.604604, -0.497383 51.60457, -0.497448 51.604411, -0.49747 51.604244))) MULTIPOLYGON (((-0.49747 51.604244, -0.497457 51.604134, -0.497426 51.604039, -0.49723 51.603469, -0.497204 51.603303, -0.497178 51.603196, -0.497133 51.603119, -0.497043 51.602998, -0.496971 51.602933, -0.496861 51.602856, -0.496466 51.602644, -0.496422 51.602608, -0.496333 51.602514, -0.496326 51.602452, -0.496327 51.60238, -0.496358 51.602333, -0.496521 51.602195, -0.496571 51.60196, -0.496709 51.601756, -0.496739 51.601666, -0.496743 51.60162, -0.496723 51.601578, -0.496672 51.601513, -0.49666 51.601458, -0.496476 51.60142, -0.496274 51.601463, -0.496218 51.601478, -0.495564 51.601806, -0.49508 51.602055, -0.495032 51.601992, -0.494394 51.601359, -0.494019 51.601587, -0.494089 51.601699, -0.494304 51.601895, -0.494575 51.602166, -0.494664 51.602271, -0.494745 51.602409, -0.494807 51.60257, -0.494855 51.602668, -0.494854 51.602691, -0.494877 51.602783, -0.494904 51.602855, -0.495018 51.602999, -0.495049 51.603042, -0.495151 51.603138, -0.495666 51.603573, -0.495804 51.603711, -0.496014 51.603964, -0.496122 51.604113, -0.496289 51.604362, -0.496336 51.604435, -0.496758 51.604334, -0.49704 51.604304, -0.49716 51.604484, -0.497358 51.60452, -0.497322 51.604592, -0.497361 51.604604, -0.497383 51.60457, -0.497448 51.604411, -0.49747 51.604244)))	Facts
Point	`POINT (-0.496008 51.602883)`	Facts
Document url	https://www.hillingdon.gov.uk/media/3839/Black-Jacks-and-Copper-Mill-Lock-map/pdf/9nBlack_Jacks___Coppermill_CA_boundary.pdf?m=1603207166303	Facts
Designation date	1975-07-31	Facts

{
        "entry-date": "2026-03-13",
        "start-date": "1975-07-31",
        "end-date": "",
        "entity": 44015550,
        "name": "Black Jacks Lock",
        "dataset": "conservation-area",
        "typology": "geography",
        "reference": "CA-14",
        "prefix": "conservation-area",
        "organisation-entity": 167,
        "geometry": "MULTIPOLYGON (((-0.49747 51.604244, -0.497457 51.604134, -0.497426 51.604039, -0.49723 51.603469, -0.497204 51.603303, -0.497178 51.603196, -0.497133 51.603119, -0.497043 51.602998, -0.496971 51.602933, -0.496861 51.602856, -0.496466 51.602644, -0.496422 51.602608, -0.496333 51.602514, -0.496326 51.602452, -0.496327 51.60238, -0.496358 51.602333, -0.496521 51.602195, -0.496571 51.60196, -0.496709 51.601756, -0.496739 51.601666, -0.496743 51.60162, -0.496723 51.601578, -0.496672 51.601513, -0.49666 51.601458, -0.496476 51.60142, -0.496274 51.601463, -0.496218 51.601478, -0.495564 51.601806, -0.49508 51.602055, -0.495032 51.601992, -0.494394 51.601359, -0.494019 51.601587, -0.494089 51.601699, -0.494304 51.601895, -0.494575 51.602166, -0.494664 51.602271, -0.494745 51.602409, -0.494807 51.60257, -0.494855 51.602668, -0.494854 51.602691, -0.494877 51.602783, -0.494904 51.602855, -0.495018 51.602999, -0.495049 51.603042, -0.495151 51.603138, -0.495666 51.603573, -0.495804 51.603711, -0.496014 51.603964, -0.496122 51.604113, -0.496289 51.604362, -0.496336 51.604435, -0.496758 51.604334, -0.49704 51.604304, -0.49716 51.604484, -0.497358 51.60452, -0.497322 51.604592, -0.497361 51.604604, -0.497383 51.60457, -0.497448 51.604411, -0.49747 51.604244)))",
        "point": "POINT (-0.496008 51.602883)",
        "quality": "authoritative",
        "document-url": "https://www.hillingdon.gov.uk/media/3839/Black-Jacks-and-Copper-Mill-Lock-map/pdf/9nBlack_Jacks___Coppermill_CA_boundary.pdf?m=1603207166303",
        "designation-date": "1975-07-31"
    }

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© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on [date]. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

Licensed under the Open Government Licence v.3.0.

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