Hello Salzzy,
First of all, we are very sorry to hear about your loss.
Did you have a chance to look at the article viewed before posting? How to request access to a deceased family member’s Apple account – Apple Support (UK), as it says the following:
In the US and other locations, you can request access to a deceased person’s Apple ID and data with a court order that names you as the rightful inheritor of your loved one’s personal information. In some jurisdictions, such as France, Germany, Japan, Australia and New Zealand, alternative documentation and process instead of a court order are accepted.
Where applicable, the court order needs to specify:
• The name and Apple ID of the deceased person.
• The name of the next of kin who is requesting access to the deceased’s account.
• That the deceased was the user of all accounts associated with the Apple ID.
• That the requestor is the deceased’s legal personal representative, agent or heir, whose authorisation constitutes “lawful consent”.
• That Apple is ordered by the court to assist in the provision of access to the deceased’s information from the deceased person's accounts. The court order should be addressed to the relevant Apple entity.
• If you have a court order with this information, or if you need additional help, please contact Apple Support.
While it does mention US, it does not specify the court order needs to come from the US. It can be from your region.
We would suggest that you reach out to Apple Support directly for clarification.
You can reach Apple phone support in the United Kingdom by calling 0800 107 6285. For Accessibility and assistive technology, call 0800 048 0754. They are available between 8:00am and 7:45pm seven days a week.
Again, we are sorry for your loss.