The Area Codes of United Kingdom: City/Town or RegionArea code 1.Raughton Head016974 (+4416974) 2.Reading0118 (+44118) 3.Redditch01527 (+441527) 4.Redhill01737 (+441737) 5.Redruth01209 (+441209) 6.Retford01777 (+441777) 7.Rhyl01745 (+441745) 8.Richmond01748 (+441748) 9.Ringwood, New Milton and Highcliffe01425 (+441425) 10.Ripley01773 (+441773) 11.Ripon01765 (+441765) 12.Rochdale, Rossendale and Shaw01706 (+441706) 13.Rockbourne01725 (+441725) 14.Romford01708 (+441708) 15.Romsey01794 (+441794) 16.Ross-on-Wye01989 (+441989) 17.Rostrevor (Northern Ireland)02841 (+442841) 18.Rothbury01669 (+441669) 19.Rotherham01709 (+441709) 20.Rothesay01700 (+441700) 21.Royston01763 (+441763) 22.Rugby01788 (+441788) 23.Rugeley01889 (+441889) 24.Runcorn, Warrington01928 (+441928) 25.Ruthin01824 (+441824) 26.Rye01797 (+441797)