Former soldier and builder Paul Taylor, 60, originally from Peterborough and now of Valentine Close, Fareham, Hampshire, was arrested last year following a cold case review.
Today, at Chelmsford Crown Court, a jury found him guilty of murder following 23 hours of deliberation.
He was found guilty of three counts of rape, one attempted rape and a serious sexual assault, which were all committed in the months leading up to Miss McGrath's murder
More top news
It will be a cooler and cloudy day with the outside chance of a shower. Highs of 16 deg C.
Becoming drier by this evening with the chance of a late sunny spell.
The Chief Executive of Southend United has told ITV News Anglia that his players deserved to win promotion to League One at Wembley.