No change of equipment i use my own netgear router. Should have said the trouble i am having is i get Webpage not found errors.Without knowing what trouble you're having viewing them it's going to be difficult for anyone to say.
Did the change over from O2 to Be involve changing any equipment?
More like SNR issue imho. Check your signal to noise ratio on your new connection.
Already on the latest firmware i am beginning to to suspect this may be the problem. Only updated it a few days ago but i don't think the router has been right sense. Changing from Be to O2 should have made no difference other than in name as they are the same provider.Have you tried flashing your netgear router with the latest firmware?