Career
He has refereed in the Eerste Divisie, the Eredivisie and the Union of European Football Associations Champions League. His home town is Alphen aan den Rijn. His first match in professional football was the one between Go Ahead Eagles and Helmond Sport on 17 October 2003.
In June 2004 he was promoted to the Dutch referees" A-list, allowing him to be a referee at international matches.
He also belongs to the Union of European Football Associations "elite group", meaning he can officiate Champions League matches. In 2005 Blom was awarded the "Sportsman of the Year" title by the municipality of Gouda.
Blom is a full-time employee of the Royal Dutch Football Association (KNVB). In addition to his employment as a referee, he works for the Association"s referee education department.
In a Union of European Football Associations Euro 2012 qualifying match on 3 September 2011, Blom awarded a penalty to the Czechoslovakian Republic in the dying minutes of a game against Scotland.
The penalty was given because of an alleged foul on January Rezek, but replays showed the "foul" to be simulation on Rezek"s part. The penalty was converted, leveling the score at 2–2. Subsequently, Blom booked Scotland"s Christophe Berra when the latter was fouled in the Czechoslovakian penalty box.
The penalty was denied, Blom believing Berra to have dived.
The result all but ended Scotland"s hopes of qualification. Following this performance, and other performances with controversial incidents or cards in his home league, the Dutch Federation has decided he will not be nominated to represent KNVB as a referee at Euro 2012
On 22 March 2013, Blom officiated the game between Norway and Albania and unjustly sent off the Albanian player Andi Lila with a very controversial second yellow card after a dive from Mohammed Abdellaoue.
The decision was much criticized as personal targeting as he had booked the same player with a red card in a previous match.