G, H

Enw Canolfan	Cyfeiriad	Ffôn
GISDA	22/23 Y Maes Caernarfon Gwynedd LL55 2NA	01286 671153
Glantawe Outdoor Education Academy	1 Bryn Celyn Pontardawe Swansea Neath Port Talbot SA8 4LG	01792865139
Gower College Swansea	Tycoch Road Swansea SA2 9EB	01792 284000
Greenhill School	Heol Brynglas Rhiwbina Cardiff CF14 6UJ	02920693786
Groundwork North Wales	3-4 Plas Power Road Tanyfron Wrexham LL11 5SZ	01978 757524
Groundwork Wales	Ty Mynyddislwyn Environment Centre Bryn Road Pontllanfraith Blackwood NP12 2BH	01495 222605
Grŵp Llandrillo Menai	Llandudno Road Rhos On Sea Colwyn Bay LL28 4HZ	01492 546666
Grŵp NPTC Group	Dwr Y Felin Road Neath SA10 7RF	01639 648000
Gwasanaeth Ieuenctid Gwynedd / Gwynedd Youth Service	Gwynedd Council Shirehall Caernarfon Gwynedd LL55 1SH	01286 679187
Gwernyfed High School	Three Cocks Brecon LD3 0SE	01497820445
H.M.P. Cardiff	Education Department 1 Knox Road Cardiff CF24 0UG	02920 923297
H.M.P. Swansea	Oystermouth Learning & Development Centre 200 Oystermouth Road Swansea SA1 3SR	01792 485300
Hafren Learning & Training	Hafren Learning & Training Ltd 85 Caerwent Road Croesyceiliog Cwmbran NP44 2QD
Haverfordwest High VC School
Hawthorn High School	School Lane Hawthorn Pontypridd CF37 5AL	01443 841228
Health Education and Improvement Wales (HEIW)	Ty Dysgu Cefn Coed Nantgarw CF15 7QQ
Heronsbridge School	Ewenny Road Bridgend CF31 3HT	01656 653974
Hillside Centre Neath Port Talbot County Borough Council	Hillside Secure Centre Off Burnside Road Cimla Neath SA11 1UL	01639 641648
HIT Education	8 Foxglove Close Trelewis CF466FA	07944442969
HMP Usk, Prescoed and Cilwrgi Farm	47 Maryport Street Usk NP15 1XP	01291 671680
Hwb y Gors	Llwyn Hen Cwmgors SA18 1RF	07480251570
Hywel Dda University Health Board	Glien House Glien Rd Cillefwr Industrial Estate Johnstown SA31 3RB