Alba
The ruler of Alba was King Malcolm I (Malcolm the Dangerous Red), who had ruled since 943 and would continue to do so until 954.
Deheubarth
The ruler of Deheubarth at the beginning of 950 was King Hywel ap Cadell ap Rhodri (Hywel the Good), who had ruled since 920. This year, King Owain ap Hywel ap Cadell would take over.
England
The ruler of England was King Eadræd, who had ruled since 946 and would continue to do so until 955.
Gwynedd
King Iago ab Idwal together with his brother King Idwal ab Idwal (Idwal the Junior) until Iago imprisoned him to rule alone.
Jórvík
The ruler of Jórvík was King Olaf Sigtryggsson, who had ruled since 949 and would continue to do so until 952.
Strathclyde
The ruler of Strathclyde at this time was likely to have been King Dyfnwal map Owain.