Will the national Welsh flag be legalised on Welsh number plates ?

Welsh number plate campaign. That's the aim of Plaid Cymru in a campaign recently launched by Plaid's Westminster candidate for Clwyd West, Llyr Huws Gruffydd, who is urging the public to sign an on-line petition

Welsh number plate campaign Plaid Cymru is fighting for the right of Welsh motorists to have the Welsh flag on their car number plates. In a campaign recently launched by Plaid's Westminster candidate for Clwyd West, Llyr Huws Gruffydd, who is urging the public to sign an on-line petition : — In English on : http://www.numberplates.plaidcymru.org/content.php?nID=662 — In Welsh on : http://www.platiau.plaidcymru.org/content.php?nID=662
The Breton people have won the right to use the Breton national flag, the “Gwenn ha Du”, on their number plates. They are surely in favour that the same right be extended to Welsh, Scottish and English people... See, for example :

Aussi sur ABP…

C'est confirmé, la plaque bretonne présentée par le ministère de l'Intérieur sera bien celle avec le Gwenn-ha-Du

La région Bretagne a voté, l'année dernière, un vœu pour que le Gwenn-ha-Du, le drapeau breton, soit utilisé sur les nouvelles plaques d'immatriculation. Elle avait initialement choisi son logo, mais quelques militants bretons avaient fort justement invoqué le fait

, June 5 th 2008.
Excerpts of the Plaid's website : “Join our campaign to put pressure on the New Labour London Government to legalise the use of the Welsh flag on the number plates of vehicles” “In 2001 the then Westminster Transport Minister promised that the UK Government would legislate to allow the use of national flags on cars. Nearly seven years on the London Government has yet to act.” “If you think that the people of Wales, Scotland and England should be legally entitled to use their national flags as a symbol of their identity on the number plates of their vehicles, join our campaign by signing our petition”. “Show Gordon Brown that we're Welsh and proud of it !”
Plaid Cymru,
Ty Gwynfor,
18 Park Grove
Caerdydd – Cardiff, CF10 3BN
http://www.numberplates.plaidcymru.org/content.php?lID=1