For each speed product VM provides three speeds. For example, for M200 you get:
Advertised Speed: 213 Mbps
Expected Speed Range: 213 - 218 Mbps
Minimum Guaranteed Download Speed: 107 Mbps
And this is what VM says about ending your contract:
"If the download speeds to your the Virgin Media Hub falls below our minimum download speed guarantee for three consecutive days (continuously or intermittently) and we’re unable to fix the problem within 30 days, you may be able to leave your contract without paying an early disconnection fee."
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Hub 3.0, TP-Link Archer C8, TP-Link TL-SG108S 8-port gigabit switch, V6