The Area Codes of United Kingdom: City/Town or RegionArea code 1.Gainsborough01427 (+441427) 2.Gairloch01445 (+441445) 3.Galashiels01896 (+441896) 4.Garstang01995 (+441995) 5.Girvan01465 (+441465) 6.Glasgow0141 (+44141) 7.Glastonbury01458 (+441458) 8.Glenborrodale01972 (+441972) 9.Glenurquhart01456 (+441456) 10.Glossop01457 (+441457) 11.Gloucester01452 (+441452) 12.Golspie01408 (+441408) 13.Goole01405 (+441405) 14.Gosforth019467 (+4419467) 15.Grange-over-Sands015395 (+4415395) 16.Grantham01476 (+441476) 17.Grantown-on-Spey01479 (+441479) 18.Gravesend01474 (+441474) 19.Grays Thurrock01375 (+441375) 20.Great Bernera and Stornoway, Outer Hebrides01851 (+441851) 21.Great Dunmow01371 (+441371) 22.Great Yarmouth01493 (+441493) 23.Greenock01475 (+441475) 24.Gretna01461 (+441461) 25.Grimsby01472 (+441472) 26.Guernsey01481 (+441481) 27.Guildford01483 (+441483) 28.Guisborough01287 (+441287) 29.Guiseley, Wharfedale01943 (+441943)