LONDON, Jan 19 (Reuters) - The United Kingdom reported 108,069 new cases of COVID-19 on Wednesday, leaving the seven-day tally down by 37.2% on the previous week. It reported 359 deaths of people who had tested positive for the disease within the previous 28 days. The seven-day total for deaths was up 8.2% on the week before, following a record spike in infections in recent weeks.