@Orange noband by Roger Shone
I had broadband from Wanadoo & then got taken over by Orange Broadband. Over time the service just seemed to get more and more unreliable, and with not a lot of web searching you can find many people who are unhappy at both their technical and business-ethical performance.
I'm no longer with Orange Broadband and, based on my own experiences, to anyone else attempting to leave them I'd say "document or copy every part of the transaction".
Rather than recommend any other specific ISP, as we all have our own preferences or priorities, as these ratings largely match my experiences using 5 ISPs I'd say have a look here:
AC for my own good/paranoid/round-the-twist* reasons.
*Delete options based upon your own opinion of Orange Broadband.