I would add that in socialist countries where the great majority of the means of production are publicly owned, where you may have markets especially in consumer goods and some aspects of agriculture, they are completely different to "the markets" in capitalist countries.

In the latter you are talking of billions of pounds (or whatever currency) being moved around the globe in split seconds to maximise corporate and institutional profits (and exert political power as we have seen in UK).

Consumer and agricultural markets in socialist countries are mainly about individuals or small businesses producing goods and services people want and need and are willing to pay for them.

The overall priorities and directions of the economy are set by the people/state and those markets operate to help meet those aims and priorities.