Oh I just love such inconsistency so I either have to wait until I can see whether the gutter is intended to be a cycle lane... or more likely, just take primary through the carriageway lane and fark the motorists.
I thought the OP was describing shoot like this one in Cambridge except that the OP's does it from both sides instead of only the left. Cambridge Cycling Campaign have been complaining about the pictured one since at least 1996
https://www.camcycle.org.uk/campaigning/papers/buildouts.html - it's disappointing if some backwards local governments are still building more of them.
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It's a motoring supremacist design intended to reduce the amount of time that motorists have to wait for people on the crossing, at the expense of some safety for anyone using the left lane (not many in Cambridge because parked cars usually fill it until the crossing zigzags) and pedestrians waiting to cross who are now stood waiting out in traffic.