Ms Hurrell, 29, of Clapham, kept a "booze diary" that showed she drank 40 units in the week before December. The recommended limit for women is 14. The BBC London presenter said: "I had no idea I was doing that. I am not the sort of girl scraped off the kerb after a big night out, but I was drinking every night after work. I'd crack open a beer after work and have a glass of wine with dinner.