Are VUSA and VOO essentially the same? What's the difference?

[Viktor]

Unfortunately we can’t offer ETFs that’re listed on US exchanges because the providers don’t produce KIDs

There’s more details here -

US domiciled ETFs - without the KIIDs?

Hey everyone, As we often mention, the Stock Universe is fluid and subject to change depending on all sorts of things. Mostly user demand, but also the regulatory landscape and operational factors like overly-juicy corporate actions. The KID issue arises from PRIIPs rather than MiFID II, but needless to say - yes, this does affect UK brokers’ ability to offer ETFs without KIDs to retail clients. They remain in the stock universe notwithstanding because we have always known there is a lead time…