Originally Posted by
PVDtoDEL
no
You get a discount on paid access though

CO *Gs with a UK address get a free lounge membership card. At least they did up until 2011. The UA merger may kill that.
Also, you can hit *S with 5 TATL CO metal segments and *G with 10 r/t on CO metal. Again, the merger might end that.
redemption is pretty good (essentially guaranteed if you pay at the higher rate and IME pretty easy at the lower rates for leisure travel). Can redeem on VS too, which is useful.
TATL Y *G Y I'd say AC > CO/UA > US
I actually like the 757-200 on CO (faster loading, quicker service, flights from regional airports) but plenty don't.