His signature is a significant coup for the East Yorkshire club given the obvious promise shown during his early career in the capital.
One of Super League’s most promising players, lightening-quick Dixon has scored 38 tries in just 52 appearances although this current campaign had largely been written off after he endured a serious knee injury while on international duty last October.
That scuppered a potential move to Wigan Warriors - he only returned to Super League action with a try in relegated London’s shock win against Leeds on Sunday - but Hull KR have clearly benefitted.
Hackney-born Dixon, who turns 22 on Friday, said: “I made the England Knights squad at the end of last year but my injury halted my progress a little bit.
“It’s been frustrating but after two good years I’m hoping I can get back to my best form and challenge for an England spot in the not too distant future.
“Now that I’m back in the team, I want to end the year on a high and give myself something to take into what will be a big pre-season for me.
“Hopefully in the next three years, I can get myself back in the international frame and I’m sure the competition for places we’ll have at Rovers next season will help me massively.
“It’s a good time to be coming to the club. With the players already signed and a few more additions, hopefully we’ll have a squad capable of challenging towards the top end of the table.”
Hull KR head coach Chris Chester said: “We’re delighted that Kieran has chosen to come to Hull KR from next season.
“He was on the verge of a full England call-up 12 months ago and he’s had plenty of interest from other clubs so it’s great that we’ve been able to sign a player of his calibre.
“We’ve identified a lack of speed in the outside backs and Kieran certainly brings pace in abundance.
“He’s a great finisher and he scored another good try at the weekend so we’re looking forward to what he can bring to the side.”