What makes Roman Szmal paints so fabulous is that they grind each pigment individually according to the particle size of the pigment needed. There is no one for all size at Roman Szmal.
I love their rich, bold and natural paints.
They are generous and very competitive compared to other brands. They are made in Poland with a delightfully handpainted paper wrapper enclosing each silver paper wrapped pan.
Now they even have half pans!
Here is the link to their PDF paint chart.
https://media.jacksonsart.com/pdf/cc_aquarius.pdf
Here is a link to Jacksons who sell them in the UK.
https://www.jacksonsart.com/en-us/roman-szmal-aquarius-watercolour-paint