After three months, 50 locations and more than 1,000 bookings, the Celotex pink double- decker bus has parked up for the final time at the company’s headquarters at Hadleigh in Suffolk – signaling the end of the insulation specialist’s “Insulating Britain” roadshow.Setting off from London in March, the 50-date roadshow saw Celotex take part in live webinars and deliver a …