Met Police Acting Deputy Commissioner Helen Ball says their Partygate investigation was "very thorough" and "logical", explaining they considered a number of factors including date, activity, and circumstances of the event before deciding whether to issue fines. She refuses to name anyone who has been fined, without explaining why, but states that is a stance they have maintained "throughout". Report by Edwardst. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn