Vicarage Celtic booked their place in the Webster Cup final on Saturday, beating London Colney Blues 2-0 to keep their treble hopes alive.
With the West Herts Division Two title already in the bag, Celtic have also sealed a place in the final of the Sir Stanley Rous Cup later this month.
Celtic took the lead inside a minute against London Colney, James Berger prodding home Jordan Toomey's free-kick.
Trafford Nolan nearly doubled the lead before the break, but his effort was cleared off the line.
After the break London Colney pushed for an equaliser and Celetic took full advantage to break, Nolan feeding Toomey who raced on to lift beyond the London Colney goalkeeper.
Celtic will take on Oxhey FC in the final on May 1.