Average GPS coordinates for Holborn Postcode location: 51.518, -0.12. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Holborn on map:

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Listing cities & postcodes (2):
>> London, WC1 Holborn, England, GPS coordinates: 51.5175,-0.1204
>> London, WC2 Holborn, England, GPS coordinates: 51.5175,-0.1204