In 1997, Hansen became the third Dane, after Ole Mortensen and Soren Henriksen, to play English county cricket when he joined Hampshire.
[3] His performances for Denmark caught the attention of Hampshire, with Hansen joining the English county for the 1997 season.
He featured heavily for the Second XI in the 1999 season,[5] but did make three first-class appearances in the 1999 County Championship against Sussex, Northamptonshire and Somerset.
It was in 2000 that he made his debut in List A cricket for Denmark against Zimbabwe A in the 2000 ICC Emerging Nations Tournament.
[12] Later that same year, he appeared for Denmark in a List A match in the English domestic one-day tournament, against the Durham Cricket Board at Hartlepool.
[19] In August 2007, he took 7 for 13 in a friendly against Bermuda at Brøndby, the best bowling figures for Denmark in international cricket.
[20][21] In November of that year, he was selected in Denmark's squad for the World Cricket League Division Two in Namibia.
[24] Hansen injured his hand during the tournament and only played in three matches against Afghanistan, the Netherlands and Bermuda, as a result.