Scotch-Fix Mirror Double-Sided Mounting Tape, 19mm x 5m - For Indoor Use, Humid Areas, For Mirrors in Bathrooms and Kitchens, Works on Ceramic, Tiles, Finished Wood, Metal, Glass and Painted Walls :
3M Scotch Extreme Double Sided Mounting Tape 1" X 48" Holds up to 30lbs #414 | eBay
Scotch 3M Mount Clear Double-Sided Tape: 1 in. x 125 in. (Clear) : Amazon.co.uk: Stationery & Office Supplies