I remember going for a demo around 1985/1986, and trying some £250 amps out. The dealer tried to get me to try the Audiolab at £350, but I couldn't afford it. Looking back, I wish I could've done.
If you think back to the early 80's, people were mostly buying Technics and Pioneer amps with flashy LED meters. Compare a 90's Technics SUA900 to an 8000A and see which one sounds like music. Speaker choice was important as it was pretty neutral - get this wrong and you could end up with a lifeless system.
Yes, some of the early models might've been a little rough, but I can only assume that Malcolm Steward wasn't an Audiolab fan (there's been plenty of politics in the hi-fi world over the past 30-40 years!). Maybe he didn't get on with Phil Swift? Who knows?
Anyway, 10 years after launch, it was brought up to date, and changed to the better looking black, and for me, was greatly improved. Whenever I recommend an 8000A to anyone, it is always the later black one. The older grey ones could be up to 30 years old now, and will more than likely need parts replacing to bring them back up to their full spec and sound quality. Again, because of this, the later black ones are a safer bet to buy on the used market.
Whether it was a British milestone in hi-fi is debatable, but for under £500, you could own a real taste of what high end amplification was all about.