<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by whughes3:
Sorry, but by my reading of the rules, 'sapphire' status only entitles you to BC lounge access of the airline you're flying on. So, unless BA also uses 'The Wing' as its lounge, you won't get in. (Which would be a pity; I was in it 2 weeks ago, and it's superb!).</font>
Your reading of the rules is wrong - you can use the BC lounge of any OW carrier as long as you are flying on a OW carrier that day.
Dave