A "sources" story from Reuters

  • ECB would pledge to backstop markets in the case of a UK vote to leave

  • Would announce a commitment to maintain market liquidity

  • Would work in tandem woth the Bank of England

  • Any announcement on backstops or action would come June 24th (day after the vote)

  • ECB and BOE would open unlimited EUR & GBP swap lines

The senior ECB official apparently spilling the beans says there would be a statement to do whatever it takes to maintain adequate market liquidity.

It shouldn't be a surprise to anyone really but the Euro looks like it might have been shaken by the headline. We're back towards the lows and trade at 1.1217.