If resigning from a government post counts as a consequence, then there are a few UK examples:
In April 2020, Scotland's chief medical officer resigned after making two trips to her second home during the coronavirus lockdown.
In May 2020, Professor Neil Ferguson quit as a government adviser on coronavirus after admitting an "error of judgement", when "a woman he was said to be in a relationship with visited his home in lockdown".
Also: in September 2020, Margaret Ferrier, a Member of Parliament, travelled by train with COVID symptoms, and then again after a positive test. She was suspended from her party (the SNP), and later arrested and bailed.
(MPs can't be ordinarily be forced to resign; but they automatically lose their seat if sent to jail for more than one year, and can be subject to a recall petition if jailed for less than one year (source) or after a suspension from the Commons. Depending on the outcome of this case, that could still happen.)
UPDATE 1: In June 2021, Matt Hancock, the Secretary of State for Health and Social Care, resigned "after he breached social distancing guidance by kissing a colleague".
UPDATE 2: In April 2022:
The prime minister, the chancellor and the PM's wife all received fixed penalty notices for attending a birthday gathering for the PM in No 10.
The party occurred in June 2020.
Meanwhile, In September 2022, the aforementioned Margaret Ferrier was ordered to carry out 270 hours of community service for the COVID rule breach mentioned above. She continues to sit as an independent MP. In June 2023, the House of Commons voted to suspend Ferrier from the House for thirty days, allowing a recall petition to begin in her constituency. This petition was ultimately successful, leading to her removal as an MP and the triggering of a by-election.