<http://www.bbc.co.uk/news/uk-england-birmingham-13154124>
response time goal for "emergency calls" is 10 minutes - this is their
highest response level apparently - 2010 / 2011 they got to 65,000
"emergency calls" in under 10 minutes - but it took them over 10
minutes to get to 32,000 of their "emergency calls" - so I am guessing
that their average response time to emergency calls is approximately 8
minutes
"priority call" responses have a goal of 1 hour - they arrived at
67,00 of these calls in under 30 minutes - response time was over 30
minutes to 54,000 calls