From what I've seen on youtube regarding British TV plays, they were much much higher budget, and much closer to just a normal TV series/film, maybe with a thea

From what I've seen on youtube regarding British TV plays, they were much much higher budget, and much closer to just a normal TV series/film, maybe with a theatrical dramatic flare, while Soviet TV plays often had abstract "modern theatre" like decorations, fewer or no background characters, other cost cutting measures, much closer to theater in terms of production.