Market overview by Energy Label class
Tumble dryers are one of the most energy-hungry appliances now common in our homes, with almost half of all UK households owning one.
Currently, no tumble dryers available in the UK are energy efficient enough to be classed as A+++. The most efficient models available have an A++ label and make up 1% of the current market. 67% percent of models are in the C class. 
Number of models per label class for tumble dryers
Source: GfK, July 2013
 According to Kantar Media, almost half (48.1%) of adults had a tumble dryer in their home in 2010; and in October 2010, the home appliance retailer Currys announced a 50% increase in the sale of tumble dryers in the final week of September, following an average fall of 23 millimetres (mm) of rain across England and Wales in the preceding week. Keynote Market Research, http://www.keynote.co.uk/market-intelligence/view/product/10492/household-appliances--white-goods/1/executive-summary?utm_source=kn.reports.related, accessed January 2012
 Based on GfK data, accessed August 2013