| Institute of Historic Building Conservation : www.ihbc.org.uk |
| The Society for the Protection of Ancient Buildings : www.spab.org.uk |
| The National Trust : www.nationaltrust.org.uk |
| The National Trust : www.nationaltrust.org.uk |
| English Heritage : www.english-heritage.org.uk |
| Historic Scotland : www.historic-scotland.gov.uk |
| CADW Welsh Historic Monuments : www.cadw.wales.gov.uk |
| The Building Conservation Directory : www.buildingconservation.com |
| Historic Houses Association : www.hha.org.uk |
| Images of England: www.imagesofengland.org.uk |