The Blockhouse
THE BLOCKHOUSE
Listed on the National Heritage List for England. Search over 400,000 listed places
Overview
- Heritage Category:
- Listed building
- List Entry Number:
- 1219196
- Date first listed:
- 14-Dec-1992
- Statutory Address:
- THE BLOCKHOUSE
Location
Location of this list entry and nearby places that are also listed. Use our map search to find more listed places.
Use of this mapping is subject to terms and conditions .
This map is for quick reference purposes only and may not be to scale.
What is the National Heritage List for England?
The National Heritage List for England is a unique register of our country's most significant historic buildings and sites. The places on the list are protected by law and most are not open to the public.
The list includes:
 |
Buildings |
 |
Scheduled monuments |
 |
Parks and gardens |
 |
Battlefields |
 |
Shipwrecks |
Images of England Project
- Date:
- 2001-09-23
- Reference:
- IOE01/05602/20
- Rights:
- © Mr Bernard Stradling. Source: Historic England Archive
Local Heritage Hub
Unlock and explore hidden histories, aerial photography, and listed buildings and places for every county, district, city and major town across England.
Discover moreOfficial list entry
- Heritage Category:
- Listed building
- List Entry Number:
- 1219196
- Date first listed:
- 14-Dec-1992
- Statutory Address 1:
- THE BLOCKHOUSE
Location
- Statutory Address:
- THE BLOCKHOUSE
The building or site itself may lie within the boundary of more than one authority.
- District:
- Isles of Scilly (Unitary Authority)
- Parish:
- Tresco
- National Grid Reference:
- SV 89730 15462
Details
TRESCO
SV81NE The Blockhouse 1358-0/1/119
II
Blockhouse. Probably 1548-52. Roughly coursed granite rubble. Rectangular plan. Top of the platform is enclosed by walls, originally surmounted by a parapet with embrasures. Stairs to east. Winder stairs to original lean-to in south-east corner, with plain granite open fireplace; remains of later room constructed in south-east corner of platform. Covers Old Grimsby Harbour, and is probably one of the blockhouses built on Tresco under Sir Francis Fleming, and later John Kiligrew, captain of Pendennis Castle, between 1548 and 1552. Scheduled as an Ancient Monument. (P Laws: The Buildings of Scilly: Redruth: 1980-: 6; B.H. St.J.O'Neil: Isles of Scilly: London (HMSO): 1950-: 20).
Listing NGR: SV8973015462
Legacy
The contents of this record have been generated from a legacy data system.
- Legacy System number:
- 62554
- Legacy System:
- LBS
Sources
Books and journals
Laws, P, The Buildings of Scilly, (1980), 6
O'Neil, BH St J, Isles of Scilly, (1950), 20
Legal
Map
This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 04-Jun-2026 at 23:31:46.
Download a full scale map (PDF)End of official list entry
All text content is available under the Open Government Licence v3.0 , except where otherwise stated. Any supplied maps are © Crown Copyright [and database rights] 2026 OS AC0000815036 and may not be reproduced without permission.