Without getting too heavy about this there are also a lot of people who may have been christened, do not follow the faith AND wouldn't mind a drink on Good Friday.
Did it ever occur that Tesco may just have been pandering to this vast MAJORITY of people in the country. It is the people in a Country that are Christian, not the country itself and most of those have voted with their feet not to be practicing Christians.
You as a practicing Christian might answer me this; will it spoil your day if I buy some beer tomorrow, What would be the harm or what is indicative of a non christian value about that? Once you accept that this is not banned by the religion or forbidden in the bible than it would seem that Tesco's advert was not so bad after all as they are simply appealing to the masses!
I might even do so myself and said I wasnt really bothered by the advert. I am a practising Christian and a practising home brewer, although probably drink pretty much the least of anyone on here but I do enjoy my beer. I've never expected anyone to live by my standards and I wouldnt live by someone elses and its not for me to judge them. Im not a drunk any more but I used to be though and probably drink less than a tenth of what I used to before I was a Christian although part of that is age. enjoy it in moderation and all that.