Have any of the people trumpeting this article as evidence of global cooling read it? It reads in part:
Yet, in its paper, the Met Office claimed that the consequences now would be negligible – because the impact of the sun on climate is far less than man-made carbon dioxide. Although the sun’s output is likely to decrease until 2100, ‘This would only cause a reduction in global temperatures of 0.08C.’ Peter Stott, one of the authors, said: ‘Our findings suggest a reduction of solar activity to levels not seen in hundreds of years would be insufficient to offset the dominant influence of greenhouse gases.’
In other words, the effect described in the article does not have a significant likelihood of dominating climate change. In order to provide balance and/or to justify their alarmist headline, the Daily Mail has quoted other scientists who feel differently. One of these scientists, who apparently couldn't point to any studies justifying his point of view, pointed out that models aren't perfect so there is a nonzero chance that there will be a sudden global cooling. I wouldn't hold my breath.