A former MP is challenging the 15 largest shareholders of a company that owns Llanishen reservoir – including Goldman Sachs and Barclays – to enter into dialogue with its board about the site.
American corporation Pennsylvania Power and Light controls Western Power Distribution, who in turn own the reservoir and have been trying to push through development plans there.
Its shareholders include a range of multinational organisations.
Now Julie Morgan, who is contesting the Cardiff North Assembly seat this May, is urging them to try and affect a change of policy over the site.
She said: “I have written to the Chairmen and CEOs of these companies to tell then about WPD’s actions and asked them to raise this with PPL.”