Builders working on the refurbishment of The Philharmonic have uncovered original features which were buried under plasterboard and floorboards after the building suffered decades of patching up. A hidden lane which ran between the former Philharmonic Hotel and the Philharmonic Hall was discovered behind a bar at the venue. Developers first thought it was a series of fireplaces, until further investigation unearthed a lane running the entire width of the building. An original tiled floor was also found…