Something crazy happened in the last 36 hours. Literally three tech startup events happened in London, each with multiple startups attempting to get real product out into the marketplace. However, while Launch48 and London Startup Weekend happened over the last weekend (and more of them in posts to follow), The Difference Engine, a UK seed accelerator program has spent the last few months, not days, nurturing some early stage startups. Yesterday they debuted nine new start-ups which were presented to VCs and angel investors in London for the first time. Here’s a run-down about each one and our brief take: