Buying kitchens and accessories online is a growing market trend, a new report has said.It seems that an increasing number of Britons are using the internet to find more information about upgrading their homes with a new kitchen, Hit Search noted.Last month, Google UK saw 24,900,000 searches for kitchen, 450,000 searches for kitchen designs and 110,000 for new kitchen.Modern kitchens also accounted for 22,500 searches.With UK property prices still low compared to recent years, upgrading a home with a new kitchen could boost the value of a house.Homeowners may want to put just as much effort into researching the best tradesman to fit a new kitchen or to make improvements.According to a survey for Times Online carried out by Lloyds TSB Insurance, unregistered plumbers - who may work on kitchen sinks and kitchen taps - are one of the most often cited professionals for doing a bad job.