Registering Overseas Divorce
With regard to overseas divorce, there never has been the facility to register or deposit documents for an overseas divorce in the UK.
For a foreign divorce order to be valid in England, under the Family Law Act 1986, the foreign order must be valid under the law of the country in which it was obtained and at the date at which recognition of the foreign order is sought – either of the parties has to be habitually resident, domiciled or a national of the country in which the foreign order was obtained.
https://www.nelsonslaw.co.uk/register-my-overseas-marriage-or-divorce/#:~:text=In short%2C there is no,do so under UK legislation.