Reply to Flower Girl
It's no use persecuting the newcomer harlequin ladybird, Harmonia axyridis. It is firmly established here. Only do something if it starts causing a nuisance by coming indoors.
Reply to Jayven
If hibernating ladybirds are roused prematurely indoors, often by central heating, catch them and release them into the shed, greenhouse or woodpile. They should quickly settle down again and appear at the right time in spring.