He started as a
cross-country mountain biker and won the 2005 under-23
British National Mountain Biking Championships before switching to road racing with
Plowman Craven-Evans Cycles in 2007. Richardson was the general classification winner of the 2009
FBD Insurance Rás, his only overall victory in a professional stage race. Also known as Rás Tailteann, the event comprised eight stages and was part of the
UCI Europe Tour. Riding for , he took the lead after stage three and held it to the end of the race, taking the overall win by two minutes and forty-nine seconds. His other professional win came at the same race in 2008, beating
David O'Loughlin in the sprint to the line on stage five after the two riders broke clear of the field. He would finish the race in 19th place overall. He had top-twenty overall finishes at the
Tour of Britain in 2008 and 2010, and came 5th in the elite men's road race at the 2010
British National Road Race Championships. He also scored podium finishes in uncategorized races including
Tour of the Reservoir,
Sea Otter Classic and
Lincoln Grand Prix. Richardson announced his retirement from professional cycling at the end of 2012 after winning the Rouleur’s
Combativity award on the final stage of the
Tour Of Britain. ==Post retirement==