Prior to starting the CPL you will also need hour building, and ground school.
He will need to have 150 hours total time, 100 of which must be P1 (pilot in command ie solo flight time)
And also ground school, 14 subjects approx around £2300 for full time ground school, then 14 exams at £62 each.
I see you are in North Wales, there is a couple of flight training schools at Hawarden, might be worth a visit although they dont offer commercial training but the PPL and hours building can be done there. There might even be oppurtunity for work experiance there.
Canarvon and Welshpool also offer PPL training and hour building.
I had always wanted to fly with the RAF, so joined Air Cadets etc, applied to RAF for aircrew but eyesight let me down, so joined as an engineer instead, I enjoyed it but still really wanted to fly, so left RAF and started the long road to saving enough cash to be able to fund it. I am now qualified and looking for a job, but its nice to have eng quals to fall back on.
Regards
NT