I did seethe programme. I did not like the approach to presentation because it tried to make it a "will they or won"t they" tale of excitement rather than a more sober factual programme but that could just be me.

In the end (spoiler alert!) it all hung on whether a particular piece of stone actually proved viking presence or whether there could be some other explanation. In the circumstances that programme was never going to offer any possible alternatives.

My verdict then is possible, but still unproven.