UPDATE 1-UK Stocks-Factors to watch on June 21
(Adds futures, Senior, Just Eat)
June 21 (Reuters) - Britain's FTSE 100 index is seen down by around 25 points on Tuesday, or 0.4 percent lower, according to financial bookmakers, with futures down 0.3 percent ahead of the cash market open.
* The UK blue chip index rose 3 percent on Monday to close at 6,204 points, its best single-day gain since February, after polls showed the campaign for Britain to remain in the EU gained ground.
* BREXIT: Two opinion polls on Monday suggested support for Britain staying in the European Union had recovered some ground, but a third poll found support for a "Brexit" ahead by a whisker.
Li Ka-shing, one of Asia's richest men, urged Britons to vote in favour of staying in the European Union, Bloomberg reported.
For a summary of Reuters' coverage of a possible Brexit, please click on
* SENIOR: British engineering firm Senior Plc said revenue at its Flexonics unit would be lower in the second half of this year as compared with the first, hurt by challenging market conditions in the heavy truck and oil and gas sectors. Continuación...