Minor change to remove the trailing space ;) 
$_='A Guide to Criminal Records Clearance for Prospective Employees';
s/(A\s+guide\s+to)\s+(.*)/$2 - $1/i;
print;

[download]
Criminal Records Clearance for Prospective Employees - A guide to

Hope it helps
UnderMine

In reply to Re: Re: Another RegEx poser by UnderMine
in thread Regex to move prefix of strings to their end by stew

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