Shirley Ballas will not appear on the Strictly Come Dancing tour alongside her fellow judges, as a question mark hangs over her future on the BBC One show. Details of the tour were unveiled yesterday with the judging panel comprised of Darcey Bussell, Bruno Tonioli and Craig Revel Horwood, but Ballas missing as head judge. Sources said she is undecided about whether or not to return for a second Strictly series. She joined this year as a replacement for Len Goodman, but has been criticised for her “harsh” marking of the contestants. She has refused to tone down her critiques, saying: “I judge with no fear or favour. Don’t anyone tell me how to do my job – I’ve been doing this since I was 16….