Mervyn Davies, 69, has owned shares in British Energy since its flotation in 1996, and is one of the outraged small investors. He said: 'I thought I was only liable to lose my investment and here they are threatening me with legal action. I think the tactics are heavy-handed. I am aware that shares can go up or down, but what annoys me is that people are going to walk away with their pockets full and the owners of the company get next to nothing.