The fire service is still investigating the cause of a huge blaze that ripped through a business more than a week ago. Crews spent 31 hours tirelessly tackling the flames and billowing smoke at K Laundry Ltd in Northwood Road, Ramsgate. At the height of the inferno, there were 12 fire engines at the scene of the blaze, which started shortly after 4am on July 23. Operations were scaled back and crews finally left the scene shortly after 11am the following day. And the fire service is still probing the blaze which destroyed the business founded more than 100 years ago. “We have been investigatin…