Such a list would contain nearly all providers

.
AIUI BT Consumer/SOHO provide either 55/10 or 80/20 on FTTC. (Plus faster on G.Fast and FTTP).
The difficulty would be in finding a provider that
does provide 40/2, though I think I have seen one recently.
Maybe your best bet is to ask here about any provider(s) you are seriously considering

.
Connections: OnePlus 8 Pro on Three 4+ (LTE)/5G and at home Three Mobile, with (Three)ZTE MF286D router giving about 113/20Mbps.
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The price of liberty, and even of common humanity, is eternal vigilance. (Aldous Huxley version of the well-known saying)
Were there none who were discontented with what they have, the world would never reach anything better. Florence Nightingale (Cassandra: an Essay (1860 edition?)