Una has signed up for Celebrity MasterChef 2026 and we've not got a first look at her in action. Una Healy, Celebrity MasterChef 2026. See the other celebs taking part in MasterChef week three below:Sue Cleaver, Celebrity MasterChef 2026. Pic: BBCMax Fosh, Celebrity MasterChef 2026. Pic: BBCMelvin Odoom, Celebrity MasterChef 2026.