Think about the splashback and the floor separately. Metro and smaller wall tiles suit splashbacks and are easy to measure; large-format porcelain gives a floor or wall with fewer grout lines. Use the filters to narrow by use, format, style, colour and finish.
Check the supplier suitability on the product page for where a tile can be used, and use the calculator for the number of tiles: it takes your area in square metres and adds 10% for cuts and breakages by default.
For borders, upstands and feature areas look at mosaic tiles. To match the floor to the walls, see floor tiles and wall tiles.
More tiles: Bathroom tiles · Wall tiles · Floor tiles · Kitchen tiles · Porcelain tiles · Mosaic tiles · Outdoor tiles · Saloni tiles. See them in person at our Cwmbran showroom or Marble Arch showroom.