Quoting Sam I Am
Tell you what, I was surprised to learn that even the blooming Business Class lounge at Heathrow will charge you for wifi internet access!! I'm not sure if this is normal as I normally don't fly business and it was an exception, but this blew me away. And this while the computers standing there are free ?!
Naturally, it just meant I had to pull the ethernet cable out of one of the standalones and use this, but there was only one where this was possible (and I doubt even there it was meant to be), so it's not a viable alternative....
By the way, Rotterdam airport offers free wifi (just remembered that one) 
That is a disgrace. The more I am in Britain, the more I hate it, eventhough I was born and bred here. You just don't seem to get any goodwill whatsoever! 
Paying Business Class prices should mean free wi-fi, I'm especially surprised at that. I think with Heathrow, certain mobile phone companies have got in there first and this means charges for wi-fi access. I know when my boyfriend tried to access the wi-fi last month, it was all vodaphone, T-mobile, and the like, connections. 
I suppose one excuse is wi-fi is relatively new in Britain (we seem to be behind on almost everything!), we can only hope that once it's a lot more established more places will offer it free?
Donna 