DNA profiles recorded on the national DNA database do not uniquely identify an individual. Matching relies instead on a genetic fingerprint comprising ten points. As the number of people on the database increases, there is a corresponding increase in the number of people likely to match any particular profile and hence a reduction in the usefulness of the database for identifying suspects.
Polluting the DNA database with profiles from innocent people will be counter-productive for law enforcement purposes, leading to trial by database and so infringing the right of citizens to be presumed innocent.
GERAINT BEVAN
Grovepark Gardens
Glasgow