Initial services will cover London to Dubai and London to New York.
Precisely the
same two routes as operated by Silverjet : 2007 until 2008 and R.I.P.
https://en.wikipedia.org/wiki/Silverjet
Astralis' proposal seems to be a variation on the previously mentioned themes, being envisaged as a "VIP First Class Plus" service. However, in this case the overheads would be horrendous and consistently high load factors would be essential. Also, as pointed out, a couple of tech delays would be terminal - no pun intended!
History has a habit of repeating itself.