UK Stocks-Factors to watch on Jan 9

Jan 9 (Reuters) - Britain's FTSE 100 index is seen opening up 11 points on Tuesday, according to financial bookmakers. * SHIRE: Shire ditched its revenue target of $20 billion by 2020 on Monday due to increased generic competition and new drugs from rivals, saying it would split its rare disease and hyperactivity medicines businesses to boost performance. * PSA JOBS: Peugeot-maker PSA will cut a further 250 jobs at its Vauxhall car plant in the north of England, reducing the wor