London's internationally focussed FTSE 100 gained on Wednesday as China's dismantling of COVID-19 restrictions pushed miners and banks higher, while the index still remained cautious of surging COVID cases. The large-cap FTSE 100 the mid-cap FTSE 250 added 0.3% each. China scrapped its quarantine rules for inbound travellers starting from Jan. 8 on Monday, but global markets turned jittery as COVID cases rose in the world's second-largest economy. "If the cases don't rise to the point that paralyses economic activity, then it is not going to be a big problem for market sentiment," said Ipek Ozkardeskaya, senior market analyst at...