We'll also need a signed letter of authority from them confirming that they're happy for you to act on their behalf and for us to release their data to you.</p> <p>Once we have your written request and identification documents, we'll have 30 calendar days to fulfil your request. Where for some reason this won't be possible, for instance due to large volumes of data being involved, we're permitted by law to take up to an additional 60 days to fulfil your request.