Buczacki is a Fellow of the Royal Society of Biology, a Chartered Biologist, a founder Fellow of the Chartered Institute of Horticulture, a Fellow of the Linnean Society of London, Associate of the Royal Photographic Society, and Honorary Professor of Plant Pathology at Liverpool John Moores University. He holds the Veitch Memorial Medal in gold of the Royal Horticultural Society. Buczacki is an authority on fungi and double past-President of the British Mycological Society and was awarded the Society's Benefactor's Medal. He was presented with the Garden Media Guild Lifetime Achievement Award in 2013. In 2012 he published Collins' Fungi Guide, the most comprehensive single volume illustrated field guide to British fungi ever written with around 2,500 species. He is a Fellow of CAB International, holds Honorary Doctorates from the University of Southampton and the University of Derby and in 2007 was installed as the first Honorary Fellow of Pershore College shortly before its merger with Warwickshire College. He also has an interest in modern British political history and is recognised internationally as an authority on Winston Churchill and his house at Chartwell, described in his book Churchill and Chartwell. Buczacki has been an outspoken critic of makeover gardening programmes on television, arguing that it is more important to show people how to garden than to pretend to do it for them. In September 2011 he criticised the BBC radio programme Gardeners' Question Time for having 'lost its way'.