#!/usr/bin/perl

use strict;
use warnings;
use Benchmark qw ( :hireswallclock cmpthese timethese );

our $string = qq (.co.uk/Jobs/Company-Sector/C8A6446X4PND86M9WYJ/Tradewind/?APath=2.21.0.0.0);

sub karlgoethebier {
    our $string;
    $string =~ m/.+\/.+\/.+\/.+\/(.+)\/.+/;
    return $1;
}

sub athanasius {
    our $string;
    return (split '/', $string)[4];
}

my $results = timethese (-10, {
        'karlgoethebier'   => 'karlgoethebier',
        'athanasius'       => 'athanasius',    
   });

cmpthese($results);

__END__

Karls-Mac-mini:Desktop karl$ ./tradewind.pl 
Benchmark: running athanasius, karlgoethebier for at least 10 CPU seconds...
athanasius: 10.4769 wallclock secs (10.47 usr +  0.00 sys = 10.47 CPU) @ 627362.46/s (n=6568485)
karlgoethebier: 10.4287 wallclock secs (10.42 usr +  0.00 sys = 10.42 CPU) @ 105188.77/s (n=1096067)
                   Rate karlgoethebier     athanasius
karlgoethebier 105189/s             --           -83%
athanasius     627362/s           496%             --