1.4985/90 was support before the blowout to the low 1.49's and was a resistance level back in Mar/Apr
It's playing support once again but I wouldn't hang my hat on it. I had thoughts that the pound would be most susceptible to a reversal after the ECB and here we are looking soggy again
GBPUSD H4 chart
From here we then have a short term support line at 1.4950 and then it's the 1.49 lows
A look at the weekly chart shows that strong support is cited at 1.4820
GBPUSD weekly
For those eyeing the break below 1.50 I'd be looking for this 1.4985 level to go first as a good confirmation of the break