Some of their songs are ok (their latest 'Notorious' definitely not among them, brrrr!), but only some of them. They are nice (that's not a compliment), little lack of personality. On the record they sound quite decent, but at their live performances they reveal that some of them have poor vocal capabilities, their stage moves are a bit clunky too. I guess singing and dancing academies aren't exactly educational background of British girl group members.
And
Why can't Brits make decent videoclips? They should take some lessons from Ukrainian clipmakers!