1 pound 50 p One British pound = about $US 1.66.
1 UK £ = 1.56 United States dollars
Currency rates change all the time - every minute. Check a site like www.xe.com for the latest. As I write this £1 = US$1.65554 That's not the same as a tourist would get in a bank / bureau...
As at 09Oct09 1 million British Pounds was worth 1,583,500 US Dollars
1 XCD = 0.2367 GBP (as on 2011-12-05). See related links for latest.