It will be interesting to see
It will be interesting to see just how much transatlantic capacity will bypass UK in the coming years.
This is the first fat fiber to do so in its entirety. While there are a couple that go around the UK to the north of it and land Denmark as well as a couple going France but they are pretty old (and full) - from the dot bomb age. They also have UK involvement (the protection circuits go via the UK).
Leaving politics aside, this is good for the Internet resilience. All it takes to massively cripple it today is one plough towed right outside UK territorial waters around Cornwall.