regex - Why is my line anchor not functioning as I expected?

I'm trying to parse the location entries from a .ics file
as follows seen in the image below . Normally this works fine even though the only
tester I can find is PCRE rather than ICU as I just need to add an extra backslash to
any special characters.

However in swift I get
the following results:

"^Location"
            //No Match

"^VERSION" //No Match
"^BEGIN"
            //Match
"^ :"
            //Match

Can I get the
'^' anchors to function like they do in the PCRE
tester?

PCRE regex
tester
rel="nofollow noreferrer">

Code

func
            testParticipantParsing()
{
 //let locationRegex =
            "^LOCATION:(.*(?:\\n :?.*)*)"
 let locationRegex = "LOCATION:(.*(?:\\n
            :?.*)*)"
 var regex : NSRegularExpression! = nil
 var resultsArray =
            [String]()

//Parse for location

 do

            {
 regex = try NSRegularExpression(pattern: locationRegex, options:
            NSRegularExpressionOptions.init(rawValue: 0))
 let nsString = content as
            NSString
 let results = regex.matchesInString(content, options: [], range:
            NSMakeRange(0, nsString.length))
 resultsArray = results.map{
            nsString.substringWithRange($0.range) }
 }
 //Catch errors if regex
            fails
 catch
 {

 print("invalid
            regex")
 }
 //Strip .ics new line tokens
 for var result
            in resultsArray
 {
 result =
            result.stringByReplacingOccurrencesOfString("\n :", withString: "")
 result =
            result.stringByReplacingOccurrencesOfString("\n ", withString: "")

            print(result)

            }
}