They are mostly shaped with a grip ridge. The few that aren't are indeed infuriating! Have to say that the UK safety standards can make us careless. There was the time that I turned on a light switch while standing in a bath of water in a hotel in Cairo. Who puts switches in a bathroom? Pull cords, please. It just did not occur to me that the electricity in other places might be a tad more accessible than at home. Oh dear Jen. :(

Thanks for the handy tidbit of knowledge and useful site. :)