How might England have looked in modern times had the Great Heathen Army defeated Wessex?

Any fans of The Last Kingdom or Vikings are familiar with the story of how the Viking raiders came from Scandanavia and terrorized and conqured territory in Ireland, England and France. There were many kingdoms in England and all except Wessex were subjugated to the Scandanavians. King Alfred of Wessex held out in the forests and marsh until he could regain his strength and at the Battle of Edington (Ethandun) the Saxons defeated the Great Heathen Army and Wessex was saved.

But what would have happened if the Danes led by Guthrum had won tha battle and Alfred was defeated or killed? How might have the modern world looked?