Island Area Location Sq km Sq mi 1. Great Britain 216,777 83,698 British Isles 2. Lewis with Harris 2,179.0 841.3 Outer Hebrides 3. Isle of Skye 1,656.3 639.5 Inner Hebrides 4. Mainland 968.8 374.0 Shetland Islands 5. Mull 875.4 338.0 Inner Hebrides 6. Anglesey 713.8 275.6 N Wales 7. Islay 619.6 239.2 Inner Hebrides 8. Mainland 523.3 202.0 Orkney Is. 9. Arran 432.0 166.8 SW Scotland 10. Isle of Wight 381.0 147.1 S coast of England 11. Jura 366.9 141.7 Inner Hebrides 12. South Uist 320.3 123.7 Outer Hebrides 13. North Uist 303.1 117.1 Outer Hebrides 14. Yell 212.1 81.9 N Shetland Is. 15. Hoy 143.2 55.3 Orkney Islands 16. Bute 122.2 47.2 SW Scotland 17. Unst 120.7 46.6 N Shetland Is. 18. Rum 104.6 40.4 Inner Hebrides 19. Isle of Sheppey 94.0 36.3 Kent 20. Benbecula 82.0 31.7 Outer Hebrides 21. Tiree 78.3 30.2 W of Mull 22. Coll 76.9 29.7 W of Mull 23. Raasay 62.3 24.1 off E Skye 24. Barra 58.8 22.7 S Outer Hebrides 25. Sanday 50.4 19.5 Orkney Islands 26. South Ronaldsay 49.8 19.2 Orkney Islands 27. Rousay 48.6 18.8 Orkney Islands 28. Westray 47.1 18.2 Orkney Islands 29. Fetlar 40.8 15.7 NE Shetland Is. 30. Colonsay 40.7 15.7 W of Jura 31. Holy Island 39.4 15.2 W coast of Anglesey 32. Stronsay 32.8 12.6 NE Orkney Islands 33. Eigg 30.5 11.8 Inner Hebrides 34. Shapinsay 29.5 11.4 central Orkney Is. 35. Bressay 28.1 10.8 SE Shetland Is. 36. Eday 27.5 10.6 Orkney Islands 37. Hayling Island 26.8 10.4 Hampshire 38. Foulness 26.1 10.1 Essex 39. Scalpay 24.8 9.6 off E Skye 40. Portsea Island 24.3 9.4 Hampshire 41. Lismore 23.5 9.1 N of Oban 42. Great Bernera 22.2 8.2 off W Lewis 43. Ulva 19.9 7.7 off W Mull 44. Whalsay 19.7 7.6 central Shetland Is. 45. Canvey Island 18.5 7.1 Essex 46. Mersea Island 18.0 7.0 Essex