Does same-day sale of vesting RSUs count towards total proceeds and trigger reporting?

I am a UK tax resident. My UK employer operates an RSU reward scheme related to their US-traded stock which vests regularly through a US broker. Does the same-day sale of the vesting RSU count towards the £50,000 report threshold? Example A: £60,000 of RSUs sold on the same day as vesting. Does the same-day sale have to be reported on my self-assessment? Example B: £45,000 of RSUs sold on the same day as vesting. An additional sale of £10,000 of a completely different stock (for example Vanguard ETF) is made the same year with capital gains under Annual Exemption. Do any of the sales have to be reported on the self-assessment?

Hi

Your employer should include the vested shares on your P60, so that you can declare the vesting in your self assessment tax return.  
You would also complete the foreign section, to claim a foreign tax credit for any US tax decucted.  
Sometimes, the amount vested is not include on a P60, where this is the case, you include the amount in the box for tips and other income not included on P60.

Thank you

Yes, the employer includes vested shares on P60. What I don't understand is: does the same day sale of the vested shares (i.e. without capital gains) count towards the total proceeds £50,000 reporting threshold? And as result all disposal will have to be included in self-assesment even if the gains are under the annual exemption.

Hi
If the vested shares are disposed of immediately on vesting, there is no capital gains tax liability; so it would not count towards the £50000 reporting threshold for capital gain.