Thank you everyone. I shall look for the Paul Hollywood one as it looks as though it is the correct shape - small but not mini- muffin shape. Puzzled to see the third image showing a loose bottom and one of it's uses being Yorkshire Puddings! I do have fairy cake/ mince pie tins, I just want this particular look, without the mega-size of regular American style muffins. We all have our little foibles 
Strictly 2026- Remembering Sparklefizz.
Hair loss.Starting to wear a wig.
), I would give up making buns! Why do you specifically need it to be straight sided? I use cup cake cases (smaller than a muffin and bigger than a fairy cake) in straight sided muffin tins and it works very well.
