Yes, my parents went through two currency changes - decimalisation in 1971 and then the switch to the Euro in 2002. The switch to the Euro was quite smooth - you paid with IR£ notes and then you received your change in € notes and coins. Within a few days, all my IR£ notes were gone and I was just left with some random Irish coins. Most people used cash back then, unlike today. I'm assuming the shops had to be fitted out with special cash registers, which enabled a conversion from punts to euros. All of this would have been much more difficult back in the '70s, when calculations were probably done with pen and paper. In 2002, there were complaints about prices going up.
The Euro makes travelling around the EU so much easier - no need to change your money when you travel to France or Spain or Italy. But I really struggled when I went on holiday to England a few years ago and had to grapple with sterling - I just couldn't get my head around the different notes and coins. And I was by no means elderly. I still feel sorry for the shopkeepers waiting for me to pay, as I fumbled around with unfamiliar coins. Next time I can just use my bank card.
Phyllis urging the pregnant lady in the prison cell to suck on her barley sugar reminded me of the chemist shop when I was a child - there was always a jar of barley sugar sticks.
I enjoyed the episode overall, but I agree that the women wouldn't have burnt their bras. It would have been seen as a shocking waste of fabric and money, especially given the poverty of the East End. Having said that, I was amused that Trixie picked out one of her old style bras and not one of the current styles. And we've solved the mystery of poor, neglected, baby Jonty who now appears to have a Nanny. Although I'm not quite sure how bankrupt Matthew manages to pay for two homes (one in the US and one in London) and a Nanny.
I'm curious to know where the Sr. Veronica and Geoffrey storyline is going to go. I can't see a romance forming - Geoffrey is definitely gay. I think they're just confidantes. Two people carrying secrets.