Just watched it, seemed very slow. Lots of long silences, though I guess that's intended to try and create a sinister atmosphere. Characters sitting or standing there staring at one another in silence with some spooky music or sound effects in the background.
Ive seen the Attenborough film which is what I compare it with. I'm not sure what they intend to achieve with this new dramatization apart from fill airtime and create work for actors. But Tim Roth certainly looked the part.
I was interested because I knew people who lived only a few streets away from where Rillington Place was. I didn't know they lived so near, was only later I realized. I was just vaguely aware it was somewhere in North Kensington, by that time the original street had already been demolished so wasn't printed on any A-Z map.