Alternatively, in Canada, milk can be bought in plastic bags.
1 litre bags are sold in fours (IIRC) at less than the price of a standard package (which is still the tetra-pack-style carton). A bag fits neatly into a specially designed plastic jug; cut the corner of the bag and then you can pour the milk out. (There's no need to wash the jug out as the milk is held in the bag.)
I remember there was a period not all that long ago when milk bags appeared in supermarkets, I seem to remember Countrylife (Butter ads starring Johnny Rotten) were doing them. I'm fairly certain that they had a lidded jug.
You've still got the issue of how to recycle the plastic film used in the bag, but it does reduce the amount of packaging required, and the jug is by its nature reusable. Just goes to show that there are several possible approaches...
I remember, fairly recently, liquid soap coming as a 'refill' flexible bag. That didn't last long. We shall pass over the rip-off that liquid soap is to the consumer. A passing fad to respond to a perceived 'big' consumer issue, in reality a small, vocal pressure group.
Returning to the proposed 'levy', I see from the BBC News site that it is to apply to all single-use bottles and cans. So, in answer to one post above, potentially there will be a large number of tins, trays, pots, bottles accumulating over the course of a week - depending on your lifestyle and household size. The photograph of a German machine on the BBC site states that it takes/recognises just two types of plastic bottle.
Tell that to those in the borough of Croydon who are having a terrible time with their councillors not listening to them and going against their wishes
Well, back in the day, Croydon were famous as the council not reliant on central government grant - because of the amount of office floorspace in the borough paying business rates which they could set as they pleased. They could, and did, do what they wanted so the government took control of business rates and introduced one of the many variants of capping there have been over the years.
As you correctly point out, local democracy is a sham anyway. To Bletchleyite. Say, like most areas, you have a two-party choice at election time. One party proposes a 20% hike in tax, and the other proposes 'only' a 15% hike, do you have a real choice? Until there is a 'none of the above, new candidates please' box to tick, democracy will remain a carve up between the usual suspects taking turns. Look at the widespread uproar when fortnightly collections were introduced, was the will of the people listened to?