Thanks for the replies :-) It is okay today, I think it's these awful storms that are affecting it. Yes Everhelpful it is on E4 Freeview, but not continuously like Sky. I think it must be the channel that Collywobs says. When on E4 with Sky you have a red button to press, to go to BB 24/7. Thanks again. :-|)
Just to note, if you are using Sky, you won't be able to view live streaming when a Big Brother first-look show is being broadcast, like BBBM. If it's a repeat, you will be able to.