Comparing the megalithic culture of southern england with the bronze age culture of northern scandinavia is like making parallels between sahara and florida. Not the same people, not the same cultures. Way to eradicate the Sami herritage for the sake of "wow-factor" tv. Utter rubbish.
How could any of the archaeologists participating sign off on this? Lost city of Stone henge? Might as well be looking for Narnia. Just as real. In hunter-gatherer europe there was no cities. Only seasonal camps/villages at most.
Could've been excellent if they actually tried to make some sort of factual point. The megalithic culture is present in both Denmark and Sweden. The great dolmen of Falbygden would've been an excellent site to make parallels, the seal altars of southern Gotland too. Culture that were more similar bith in time and expression.