Bunkbed with trundle guest bed - 3ft Single Bunk Bed with underbed - VERY STRONG BUNK! - Contract Use - has TWO centre rails for added support, heavy duty use : Amazon.co.uk:
Chester 4 Staircase Loft Bed Desk + Dresser + Twin Bed – Maxtrix Kids Rooms
Just Kids European Single (90 X 200Cm) Solid Wood Loft Bed by Just Kids & Reviews | Wayfair.co.uk