Moving abroad - customs?

Hi HMRC, First of all, thank you for creating user forums, this is immensely helpful! I'm planning on moving abroad, specifically France, and I'm trying to decide how to ship over my personal belongings. I have already begun shipping my library via mail, which I discovered is a subject to export (or is it import on the French side?) tax, however I have some items that I deem too valuable/fragile to ship over mail and I'd prefer to take with me on a flight and I'd like to learn if I should prepare for any sort of customs upon exiting the UK and entering France. I'm planning on bringing my Playstation console as a carry-on luggage and around 20 DVDs in my hold luggage. All of the items have been purchased in the UK and VAT has been paid for them. Is there something I need to prepare in advance of my flight to ensure that neither of these get blocked in customs, whether on this or France's side? Thank you in advance!

Hi, sorry for bumping this topic, I was just wondering if this is something that could be answered at all :)

It will be the French authorities who will have an interest in you importing goods into France. Whether you have paid taxes in the UK is of no interest to them. If you are hand carrying goods you need to be sure you are within the personal allowances permitted by the French authorities. If you are moving then you should consider applying for a transfer of residence relief again with the French authorities.

Hi,
If your goods are for personal use, you do not normally need to make a formal declaration, requiring you to complete an electronic customs declaration, when you bring them into or out of the UK.
These goods include private vehicles that have been in the UK before, and personal effects and gifts carried in your luggage or driven in a vehicle. You can see guidance here:
Check how to declare personal goods you bring into or take out of the UK
You may have to check with French customs if, and how, they require you to declare goods and pay customs charges, if applicable.
Thank you.