Wanderers have been boosted with the presence of Blues players Ben white (above) and John Yapp (thumb).
Despite the success at St Helens last week, Glamorgan Wanderers coach Richard Hodges has made four changes to the starting line-up to face table topping Llanelli on Saturday.
In the back division Gareth Morris comes into the centre to replace Nick Gill who has a knee injury and Robin Lock and Charlie Johnson swap places in the squad.
Up front Scott Andrews returns in place of Mark O'Leary after being rested last week. He also takes over the captaincy due to the fact that Nick Kelly is injured. Kelly is replaced by Richard Thomas who moves from No.8. Mike Grimes who was on the bench last Saturday starts in the back row.
On the bench there is a strong Blues influence with John Yapp being joined by Jevon Groves and Ben White.
Glamorgan Wanderers: 15. James Loxton 14. Steve Cullen 13. Jamie Jones 12. Gareth Morris 11. Robin Lock 10. Scott Sneddon 9. Glen Holloway; 1. Nathan Trevett 2. Ryan Price 3. Scott Andrews (capt) 4. Richard Thomas 5. Gareth Knight 6. Nio Aiono 7. Ben Rose 8. Mike Grimes
Replacements: 16. Richard Emms 17. John Yapp 18. Ben White 19. Jevon Groves 20. Mark Roper 21. Luke Evans 22. Charlie Johnson
Nearly 40 players were involved in the first Wales Under 18 training session of the season. WRU National Performance Manager Gethin Watts is excited at the potential shown by the group and expects the Regional Under 18 Championship to hone their skills even further.