You've worded the question a little confusingly (the UK doesn't use "dollars"), but US$70 is currently a bit under 46 British pounds, and 70 pounds would be about US$107. The exchange rate fluctuates, so this answer may not be correct after May 30 2015.
Currently, 70 GBP is worth 109.610 US dollars.
Bout 12 dollars
1,588.41 US dollars.
The average person in the UK makes around 42,000 dollars a year. This is higher than the US national average income.
Currency values vary, but right now, $10 is worth about 6 pounds.
Currently, 70 GBP is worth 109.610 US dollars.
£17.00
Bout 12 dollars
13418.10 US Dollar
1,588.41 US dollars.
13.98 USD is about 7.07 British Pounds
6 billion dollars
The rates change every day. Use this currency converter to calculate it.
UK£ 1 = 1.6001 U.S. dollars
About £600, in early 2014
12.685 Dollars as of 10Mar2013 0354am edst
You should bring about 400 to 500 dollars for spending money in the UK. This depends on how much transportation, food and admission fees you will need.