"David Sleight has provided practical training to craftsmen and conservators, as well as to architects and surveyors, relating to the repair and conservation of historic masonry for over fifteen years. This training service was provided both for English Heritage at their centre at Fort Brockhurst and subsequently for British Waterways.

He is familiar with all types of traditional brick and stone masonry, stemming from many years working on sites of major historic importance and with the best conservation materials and techniques. He is a proven exponent of good practice"

Professor John Ashurst (Architect, D Arch RIBA)


Professor Ashurst worked in private architecture practices before joining the Ministry of Public Building Works (Ancient Monuments Division), and progressing in his career to principal architect for English Heritage in charge of research, technical advice and training.

Following his extensive career with English Heritage John became a freelance consultant leading to his appointment as Professor of Heritage Conservation at Bournemouth University and the establishment of specialist courses in conservation training and a historic building consultancy which subsequently transferred to a private practice specialising in the conservation of historic buildings and archaeological sites.

John was co-author of English Heritage's Practical Building Conservation volumes, co-author of Butterworth Heinemann's Conservation of Building and Decorative Stone and author of Mortars, Plasters and Renders, published by the EASA, of which was is an honourable member. John passed away in May 2008, he will be missed by architects and craftsmen alike and will never be replaced.