By Jack Mendel London’s FTSE 100 index rose on Friday on the back of American tech giants Meta and Amazon stocks, after they issued results overnight. The capital’s premier blue chip index was called to open 60 points higher at 7,682. It was up by 0.28 per cent at 11.50am to 7,643.24. Meanwhile the midcap FTSE 250, which is more aligned with the UK domestic market, surged further, to 0.99 per cent, at 19,320.89. While US tech stocks dominated overnight news, all eyes will turn to US non-farm payrolls report, which are out at 1.30pm. They will give an insight into the state of the US economy, a…