"118. The question, however, remains whether such retention is proportionate and strikes a fair balance between the competing public and private interests.
119. In this respect, the Court is struck by the blanket and indiscriminate nature of the power of retention in England and Wales. The material may be retained irrespective of the nature or gravity of the offence with which the individual was originally suspected or of the age of the suspected offender; fingerprints and samples may be taken - and retained - from a person of any age, arrested in connection with a recordable offence, which includes minor or non-imprisonable offences. The retention is not time-limited; the material is retained indefinitely whatever the nature or seriousness of the offence of which the person was suspected. Moreover, there exist only limited possibilities for an acquitted individual to have the data removed from the nationwide database or the materials destroyed (see paragraph 35 above); in particular, there is no provision for independent review of the justification for the retention according to defined criteria, including such factors as the seriousness of the offence, previous arrests, the strength of the suspicion against the person and any other special circumstances.
120. The Court acknowledges that the level of interference with the applicants' right to private life may be different for each of the three different categories of personal data retained. The retention of cellular samples is particularly intrusive given the wealth of genetic and health information contained therein. However, such an indiscriminate and open-ended retention regime as the one in issue calls for careful scrutiny regardless of these differences.
121. The Government contend that the retention could not be considered as having any direct or significant effect on the applicants unless matches in the database were to implicate them in the commission of offences on a future occasion. The Court is unable to accept this argument and reiterates that the mere retention and storing of personal data by public authorities, however obtained, are to be regarded as having direct impact on the private-life interest of an individual concerned, irrespective of whether subsequent use is made of the data (see paragraph 67 above).
122. Of particular concern in the present context is the risk of stigmatisation, stemming from the fact that persons in the position of the applicants, who have not been convicted of any offence and are entitled to the presumption of innocence, are treated in the same way as convicted persons. In this respect, the Court must bear in mind that the right of every person under the Convention to be presumed innocent includes the general rule that no suspicion regarding an accused's innocence may be voiced after his acquittal (see Asan Rushiti v. Austria_, no. 28389/95, s 31, 21 March 2000, with further references). It is true that the retention of the applicants' private data cannot be equated with the voicing of suspicions. Nonetheless, their perception that they are not being treated as innocent is heightened by the fact that their data are retained indefinitely in the same way as the data of convicted persons, while the data of those who have never been suspected of an offence are required to be destroyed._
123. The Government argue that the power of retention applies to all fingerprints and samples taken from a person in connection with the investigation of an offence and does not depend on innocence or guilt. It is further submitted that the fingerprints and samples have been lawfully taken and that their retention is not related to the fact that they were originally suspected of committing a crime, the sole reason for their retention being to increase the size and, therefore, the use of the database in the identification of offenders in the future. The Court, however, finds this argument difficult to reconcile with the obligation imposed by section 64(3) of the PACE to destroy the fingerprints and samples of volunteers at their request, despite the similar value of the material in increasing the size and utility of the database. Weighty reasons would have to be put forward by the Government before the Court could regard as justified such a difference in treatment of the applicants' private data compared to that of other unconvicted people.
124. The Court further considers that the retention of the unconvicted persons' data may be especially harmful in the case of minors such as the first applicant, given their special situation and the importance of their development and integration in society. The Court has already emphasised, drawing on the provisions of Article 40 of the UN Convention on the Rights of the Child of 1989, the special position of minors in the criminal-justice sphere and has noted in particular the need for the protection of their privacy at criminal trials (see T. v. the United Kingdom [GC], no. 24724/94, ss 75 and 85, 16 December 1999). In the same way, the Court considers that particular attention should be paid to the protection of juveniles from any detriment that may result from the retention by the authorities of their private data following acquittals of a criminal offence. The Court shares the view of the Nuffield Council as to the impact on young persons of the indefinite retention of their DNA material and notes the Council's concerns that the policies applied have led to the over-representation in the database of young persons and ethnic minorities, who have not been convicted of any crime (see paragraphs 38-40 above).
125. In conclusion, the Court finds that the blanket and indiscriminate nature of the powers of retention of the fingerprints, cellular samples and DNA profiles of persons suspected but not convicted of offences, as applied in the case of the present applicants, fails to strike a fair balance between the competing public and private interests and that the respondent State has overstepped any acceptable margin of appreciation in this regard. Accordingly, the retention at issue constitutes a disproportionate interference with the applicants' right to respect for private life and cannot be regarded as necessary in a democratic society. This conclusion obviates the need for the Court to consider the applicants' criticism regarding the adequacy of certain particular safeguards, such as too broad an access to the personal data concerned and insufficient protection against the misuse or abuse of such data.
126. Accordingly, there has been a violation of Article 8 of the Convention in the present case."