Hundreds of plumbers, oil heating technicians, storage tank installers and industry experts descended on Belfast's Ramada Hotel recently, for the 2011 Northern Ireland Plumbing & Heating Trade Show. Northern Ireland has the highest prevalence of oil heating not just in the UK, but in northern Europe too. With over 65% of homes in the province dependent upon heating oil, oil equipment manufacturers and trade association OFTEC had a strong presence at the show.