From what I can recall, Tim Webster left Ten for good either right at the end of 2011 or very early in 2012 (this came after he first retired from the Ten news desk in 2008, before returning to present sport on the short-lived Sydney evening news in 2011).
Apart from being the sports presenter on the Sydney 5:00pm bulletin until 2008, he was also the news presenter on the Perth bulletin which was at the time produced out of the Pyrmont studio.