The Queen’s decision to have Prince Andrew accompany her at Prince Philip's Thanksgiving service was insisted upon, a royal expert has said.The 95 year old monarch was seen making her way to the service, held in honour of her late husband at Westminster Abbey on Tuesday morning, by car with her son Prince Andrew seated next to her.This has been the Duke of York’s first public outing since he settled his sexual assault lawsuit with accuser Virginia Giuffre six weeks ago and might have come as a surprise to many, after it was announced he would retire from public duties following his legal troubles. Get exclusive celebrity stories and fabulous photoshoots straight to your inbox with OK!'s daily newsletter.