Academic Research:  
   
University of Bath Centre for Death and Society
University of Sheffield The Natural Burial Project
University of York Cemetery Research Group
   
University of Durham Dr Hannah Rumble - Natural Burial research paper.
   
Some useful links:  
   
Click here for a complete list of English Heritage Cemeteries.
  Also, in the Cemeteries and Crematoria search, each is marked with the English Heritage logo and its contact details may be found.
   
The independent voice of the funeral profession.
   
Info on crematoria in every EU member state.
   
The Bereavement Register http://www.the-bereavement-register.org.uk/
Institute of Civil Funerals http://www.iocf.org.uk/
Society of Local Council Clerks http://www.slcc.co.uk/
Local Government Association http://www.lga.gov.uk/
Paradise Preserved

http://www.english-heritage.org.uk/professional/advice/advice-by-topic/parks-and-gardens/cemeteries/
   
Anglican and Catholic Diocese contacts:  
   
Anglican...  
England by diocese

http://anglicansonline.org/uk-europe/england/dioceses/index.html 

The United Diocese of Aberdeen & Orkney

http://www.scotland.anglican.org/index.php/dioceses/diocese/aberdeen_and_orkney/
The Church in Wales - Yr Eglwys yng Nghymru

http://www.churchinwales.org.uk/structure/dioceses/
   
Catholic...  
Roman Catholic diosceses of Great Britain

http://www.r-c.org.uk/