UK-CV-Writer strongly advocate writing a Cover Letter, and include one in your package.
Like the CV, once you have a clearly defined structure with lots of strong content it is possible to easily edit and tailor the letter to suit each opportunity.
The letter needs to be short and punchy, recruiters (and hiring managers) are all ‘time poor’, it is more important than ever to keep your cover letter short and to the point. Being precise is the only way you’ll get a recruiter and a hiring manager to read to the end