Apologies in advance if this is in the wrong place, but I'm really not sure where I should post this.
I will be losing my BA silver next year and so will be flying on Bronze for my next flight. I also have Aegean Gold.
My question is, if I fly CPT- LHR in Y on Qatar can I use a Star Alliance lounge in both CPT and DOH and at LHR on the return leg?

Thanks,