8 episodes was correct, last one is premiering tomorrow.
Some people missed the start of this series, so perhaps one of us could post if we see it being repeated.
At least 8
From another source : "Spy Wars, which is the Homeland star’s first foray into factual television, is an eight-part documentary series"
SLNB LMX501| Explora 2A (Primary 4,5,6) Explora 2A (Secondary 0,1,2) | Xtraview - decoders same room | 3 distributed HDMI endpoints via 2x4 Matrix
and Cat6 | 200/100 Fibre (OpenServe/Afrihost Premium UnCapped) | HD 5S in holiday mode
Who knows why it was publicised that Damian Lewis: Spy Wars has 6 episodes, but anyway I see there's at least a 7th on Fri. the 29th.
Can't check further - History's online guide is still blank.