Long jumper Amy Harris and 800m runner James Brewer will make their senior Great Britain debuts at this week's European Indoor Championships.
They were among 21 athletes named as the squad was completed for the event which begins in Birmingham on Friday.
UK Athletics performance director Dave Collins aims to use the competition as stepping stone for the 2012 Olympics.
"This is an ideal opportunity for individuals to get themselves into the frame for the future," he said.
"The first wave was about many of those who the selectors felt could challenge for podium places.
"This wave is to see more individuals step up in their performances and ultimately it will lead to more."
The second draft of athletes also included selections for both men and women's 4x400m relay squads.
Rob Tobin and Emma Duck were also rewarded for strong performances over 400m this season with places in the individual events.
Harris and Brewer won their respective titles at the UK Indoor Championships with Harris landing 6.47m in the long jump - even better than her outdoor personal best.
Brewer took some impressive scalps as he took the 800m in one minute 49.03 seconds.
Great Britain team for the European Indoor Championships, Birmingham, 2-4 March
Men:
60m: Jason Gardener (Wessex & Bath AC); Craig Pickering (Marshall Milton Keynes); Ryan Scott (Yate); reserve: Simeon Williamson (Highgate Harriers)
400m: Robert Tobin (Basingstoke and Mid Hants); Steven Green (Newham and Essex Beagles); Dale Garland (Channel Islands)
800m: James Brewer (Cheltenham and County); Richard Hill (Notts AC)
1500m: James Thie (Cardiff AAC); Chris Warburton (Notts AC)
3000m: Mo Farah (Newham & Essex); Scott Overall (Windsor Slough Eton & Hounslow)
60m hurdles: Andrew Turner (Sale Harriers)
4x400m relay:David Greene (Swansea Harriers); Phil Taylor (Liverpool Pembroke & Sefton AC); Gareth Warburton (Cardiff AAC); Conrad Williams (Kent AC); Reserve: Richard Buck (Nestle Rowntree AC)
High jump: Martyn Bernard (Unattached); Samson Oni (Belgrave Harriers)
Pole vault: Steve Lewis (Newham & Essex)
Long jump: Chris Tomlinson (Newham and Essex Beagles)
Triple jump: Nathan Douglas (Oxford City); Phillips Idowu (Belgrave Harriers)
Women:
60m: Jeanette Kwakye (Woodford Green & Essex Ladies); Joice Maduaka (Woodford Green & Essex Ladies); Montell Douglas (Blackheath and Bromley)
400m: Nicola Sanders (Windsor Slough Eton & Hounslow); Emma Duck (Team Southampton)
800m: Karen Harewood (Corby AC); Jenny Meadows (Wigan & District); Marilyn Okoro (Shaftesbury Barnet)
1500m: Helen Clitheroe (Preston); Katrina Wootton (Bedford)
3000m: Lisa Dobriskey (Ashford AC); Jo Pavey (Exeter)
60m hurdles: Sara McGreavy (Sale Harriers)
4x400m relay: Emma Duck; Jenny Meadows; Marilyn Okoro; Nicola Sanders; Helen Karagounis (Birchfield Harriers); Lee McConnell (Shaftesbury Barnet Harriers); Kim Wall (Basildon AC)
Pole vault: Kate Dennison (Sale Harriers)
Long jump: Amy Harris (Birchfield Harriers)
Pentathlon: Jessica Ennis (City of Sheffield); Kelly Sotherton (Birchfield Harriers)