Re: Lessons ?
The Police & Criminal Evidence Act (PACE) 1984, section 69 https://www.legislation.gov.uk/ukpga/1984/60/section/69/1991-02-01, was repealed by the Youth Justice and Criminal Evidence Act 1999 Section 60 https://www.legislation.gov.uk/ukpga/1999/23/section/60 following BT, CPS, Post Office, Department of Trade and Industry and the Inland Revenue writing to the law commission advising that the burden of having to provide evidence to a court that the computer was functioning and without issue was expensive and hampering prosecutions.
Whilst Horizon was released to the Post Office branches in November 1999 (following live testing at multiple branches during the year), the Youth Justice and Criminal Evidence Act 1999 was enacted on the 13th April 2000.
This brought in the 'presumption of computer reliability' to the courts, and effectively meant if you are faced with evidence from a computer, it was up to you to prove it wasn't functioning properly, and good luck if you don't have access to logs, the system design or anything else. Importantly, this was also used to prevent people challenging speed camera's and breathalysers for calibration certification.
This remains the current status of the law in England and Wales, and the new Data (Use and Access) Bill https://bills.parliament.uk/Publications/57084/Documents/5415 will seek to address this.
Here are the letters I mentioned above:
BT: https://startme-uploaded-files.s3.amazonaws.com/Uploaded-file-6368156-2024-1-2-f05b7aa3fe8d758a.pdf
CPS: https://startme-uploaded-files.s3.amazonaws.com/Uploaded-file-6368156-2024-1-2-7de74e0a6ad88ea1.pdf
DTI: https://startme-uploaded-files.s3.amazonaws.com/Uploaded-file-6368156-2024-1-2-4db06386ab297b4e.pdf
Inland Revenue: https://startme-uploaded-files.s3.amazonaws.com/Uploaded-file-6368156-2024-1-2-10324bf082032a89.pdf
Post Office: https://startme-uploaded-files.s3.amazonaws.com/Uploaded-file-6368156-2024-1-2-60e16cfd87e24754.pdf