If you have plenty of money (sadly I am not really in this boat) there are various brands of tuna/sardines in glass to be bought. Delicatessens are your best bet (have had some exquisite and unbelievably expensive French sardines in various London delis) although I've got a feeling I've seen tuna in glass in Waitrose, possibly in their cook's ingredients range. If you find any BPA free tins I'd like to know too!
wild planet sells bpa free tinned sardines. please note that their tinned salmon is not (last i checked bpa free) www.wildplanetfoods.com my whole foods market carries them and you can purchase them on amazon.
Hi, I am looking for BPA free Tuna, here in the UK, too. I think my second option will have to be talking to a fishmonger about getting some off-cuts of tuna to process myself somehow? but probably still more expensive and definitely less convenient!
About coconut milk...the Asian stores sell frozen coconut milk (and young coconut water, and grated coconut) in plastic sachets in their frozen section. Most have added citric acid or potassium ?__ for preservative, but that's not too bad.
Buy dried pulses and soak them, only buy passata in glass jars or make your own version of the 'tinned tomato', make your own coconut milk and treat yourself to a nice bit of fish occasionally from the fish mongers..... alternatively we should go to the streets and demand more respect from these companies and our government.