What did Britain know about the Soviet Typhoon submarine?

What could the government say about the Soviet Typhoon as a second-strike submarine?

Speed defers the detailed answer to the winding-up speech so he can finish the strategic case first.

An MP asks what the government can say about the Typhoon, described in the question as a Soviet counterpart to Trident and a second-strike submarine. Speed promises to address Soviet weapons in the later winding-up speech. He postpones the technical answer because he is setting out the wider strategic problem first. The exchange separates detailed intelligence about a new weapon from the broader maritime strategy under debate.