How can I tell if this fence is mine or shared?

[Missm68]

I'm trying to find out if my fence is mine or shared with next door but I can only find thease screen shots of what I have so I'm not sure what I need to look for.

assuming the property is in England the Land Registry guidance emphatically states... it depends!!!
Drawing the line on boundaries – HM Land Registry

If there is explicit wording then there is explicit wording stating who is responsible, if there isn't then:

T marks - on their own without any wording in the deeds themselves do not constitute legal ownership, but hint at what was "intended"

which side is the post = urban myth (and panel fences have them in the centre anyway). But legally speaking a one sided fence cannot have posts in another person's land (and pedantically that includes the footings of the posts as well)

left side = urban myth

good side = urban myth (contractor told me to my face, in old days perhaps but nowadays customer paid, customer gets good side. Consequently neighbour has good face on all 3 of his back garden fences).

Correct - which is why the tree example someone gave above is also incorrect. plant a tree on your neighbours land and it becomes THEIR tree. Likewise if your valuable specimen plant seeds itself all over your neighbours land and they they have lots of seedlings pop up they are their property NOT yours.

Fence belongs to whoever owns the land its been put on.

You need to speak to your neighbours and see if they have an opinion. I put up a fence on all 3 sides of my garden, and deliberately put them up inside of the boundary on my land. “Bad side” facing into my garden. So although one side is my neighbours boundary, it’s not on their land or on the boundary. I wouldn’t however expect a new neighbour to know that unless they spoke to me.

Fair enough, but if you can’t prove who the land the structure is on belongs to it means absolutely nothing.

As I said before, more often than not, the fence belongs to whoever put it up.

You can get professionals to assess as pp
if there’s nothing definitive on the deeds

To definitively assess four inches? Which is the thickness of a typical fence.

I paid for the fence both sides up to there broken fence.

I've msg my neighbour asking them because I'm sure my side had one T on but not 100% sure.

as per the Land Registry extract I previously gave, T marks have zero legal meaning on their own. It is written words in the deeds which categorically legally confirms who is responsible for maintaining the boundary. But even then that does not mean the person has to pay for a fence, they simply have to have some form of boundary marking (eg pile of stones)

You can ask your neighbours but you cannot force them to do anything, or share any costs if the deeds do not say so, T mark notwithstanding.