Huw Thomas is a former headteacher of Welsh-medium comprehensive schools and an Adjunct Member of the LPPR Unit at Cardiff University. Colin Williams is Research Professor and Director of the Language, Policy and Planning Research Unit at the School of Welsh, Cardiff University.

Huw Thomas is a former headteacher of Welsh-medium comprehensive schools and an Adjunct Member of the LPPR Unit at Cardiff University. Colin Williams is Research Professor and Director of the Language, Policy and Planning Research Unit at the School of Welsh, Cardiff University.

Huw Thomas is a former headteacher of Welsh-medium comprehensive schools and an Adjunct Member of the LPPR Unit at Cardiff University. Colin Williams is Research Professor and Director of the Language, Policy and Planning Research Unit at the School of Welsh, Cardiff University.