How to Choose the Right Rug Size for UK Living Rooms and Open-Plan Spaces Choosing the right rug size for UK living rooms and open-plan spaces is all about proportion and flow. A well-sized rug anchors furniture, defines zones, and keeps walkways clear. Leave 20–40cm of floor around edges, ensure coffee tables sit fully on the rug, and allow space for dining chairs to slide back. Always measure and tape first. Read the full blog for all the essential tips!