Just so we all know what we're discussing;
Types of evidence
There are a number of different types of evidence:
Testimony - the oral statement of a witness made on oath in open court and put forward as evidence of the truth of what he or she says.
Real evidence - this is usually a material object of some kind, which is produced for inspection, either to prove that it exists, or so that the court can make an inference as to its condition or value, for example ripped clothing, a knife or burnt document.
Hearsay evidence - when a witness, or someone else, makes a statement other than in the course of their testimony, this is referred to as an ‘out of court statement.’ Hearsay evidence is an out of court statement which is being relied upon to prove the truth of its contents.
Original evidence - this is an out of court statement offered for a relevant purpose other than proving the truth of its contents, for example to prove something was said at all.
Documentary evidence - this consists of documents which have been produced for inspection by the court. These may be items of real evidence, original evidence or hearsay.
http://www.inbrief.co.uk/court-proceedings/evidence.htm