National Trust
The National Trust protects some of the most important spaces and places in England, Wales and Northern Ireland.


English Heritage
Helping people understand, value, care for and enjoy England’s unique heritage.

The Society For The Protection of Ancient Buildings
The Society for the Protection of Ancient Buildings is involved in all aspects of the survival of buildings which are old and interesting.

Historic England

Historic England
The public body that looks after England’s historic environment.


The Heritage Directory
The Heritage Directory aims to provide comprehensive advice, both to professionals and owners of historic buildings and residents in conservation areas.


The Chartered Institution of Building Services Engineers
CIBSE exists to support the Science, Art and Practice of building services engineering, by providing its members and the public with first class information and education services and promoting the spirit of fellowship which guides our work.


CIBSE Energy Centre
CIBSE Certification was formed to provide an independent certification body for the approval of personnel, specifically LCC and LCEA.


The Institute of Engineering and Technology
The IET is working to inspire, inform and influence the global engineering community, supporting technology innovation to meet the needs of society.