By James Brinsford Millie Gibson has taken a break after it was revealed that she was being dropped as the Doctor Who companion with Varada Seethu joining Ncuti Gatwa for his second series in the iconic role. The 19-year-old actress, who came to prominence as Kelly Neelan in ITV soap Coronation Street, shared a photo of herself in a bikini as she stood waist deep in water among rocks and in front of a stunning waterfall. It looks like she was letting the stresses and strains of recent weeks wash away in a place that looks like an idyllic retreat from the rat race. She had previously posted pho…