The 26-year-old has swept all before him on the domestic front in the men's singles for half a decade but failed to get beyond the group stages at the London 2012 Olympics last summer.
That disappointment, a narrow defeat to Guatemala's Kevin Cordon cost him dear, has set Ouseph back as the British No.1 has tumbled out of the top 30 in the world rankings.
The emergence of Toby Penty, currently 90th in the world rankings, will see the youngster start as second seed behind Ouseph, who is top seed for a seventh successive time, in Manchester.
But for Ouseph the chance to extend his winning record to six straight years at the English National Championships, which begin on Friday, is a challenge that he should comfortably take care of.
"The Nationals is an event I always want to win. I am proud of my run and I definitely want to keep that going," said Ouseph, who will face Aaron Cheng in the first round in Manchester.
"It's also another great chance to see where we are in relation to the top guys in the world by the way that we play.
"It's just a case of me playing to my level and if I do that then I should win in relation to the competition.
"Maybe the men's game is slightly weaker now compared to when I first started. It may be a lack of depth but I am confident with some of the new guys coming through that will improve soon.
"Toby Penty has come to Milton Keynes to train with us after the Olympics and looks to be a good prospect and the public should look out for him."
For Ouseph the London 2012 hangover has proved quite an obstacle to overcome with five first-round defeats in his first six tournaments after the Olympics.
Ouseph also lost in the first round on his first appearance of 2013 at the Korea Open but reached the second round of the Malaysia Open second time out.
"I learnt from my experience in London that you want to be among the top guys as quickly as you can and for as long as you can so it becomes easier to qualify," he added.
"Now it is a good opportunity to test yourself against the best guys in the world and look to improve your levels early on."
© Sportsbeat 2013