A Danish architect and planning firm, ''Praxis'' (Aarhus), and the Scottish firm ''Heatwise'' (Glasgow), backed up by the Ministry of Housing, the Scottish Development Agency and the European Communities, have cooperated in order to examine the Scottish market for Danish ''know-how'' concerning energy conservation and efficiency in relation to the heating of residential buildings. Danish experts could also advise on energy policy and planning and renewable energy sources. The buildings on a large peripheral housing estate were examined in detail, especially with regard to heat losses caused by insufficient insulation and inefficient heating systems. it was discovered that the cost of raising the standard of heating in Scottish residences to that of the average Danish ones would be approximately 7 milliard pounds including necessary general repairs and upheep. There are also many barriers to development inspired by Danish know-how and technology - some being the lack of economical resources and as Glasgow is a town with great poverty problems, other needs hold higher priority amongst its inhabitants. However cooperation between the Danish and English firms will continue. (AB).