According to the Peerage Act 1963, anyone may disclaim a hereditary title of nobility within one year of inheriting it, or within one year of the passage of the Act. Since the latter deadline has long since lapsed, is there currently any way to disclaim or renounce a peerage after having held it for more than a year?
For instance, say the Earl of Exampleshire, who has held the title since 1990, becomes a fervent republican and wishes to completely dissociate himself from any noble rank. Short of lobbying for and obtaining new legislation (possibly in the form of a private act), or being attainted for a heinous crime, is there any legal mechanism by which said Earl could rid himself of his title and all its attendant privileges and obligations?
If the only realistic options involve the consent of the government or the legislative action of Parliament, and the government/Parliament refuses to cooperate, would the Earl have any recourse to the European Court of Human Rights? That is, is there anything in the European Convention on Human Rights that could plausibly be construed as applying to such a case?