Tech firms still seeking venture capital in UK despite high-profile flops

Marriage market for entrepreneurs and investors could be sign of a flourishing sector - or suggest bubble about to burst

In a wood-panelled auditorium in central London, a procession of entrepreneurs are explaining to more than 100 investors how they will change the world. They just need a few million pounds first.

One promises to solve hair loss with a gadget in a cap; another will make fabric out of CO2: all come armed with PhDs, slick presentations and rictus grins.