boundary wall

[bonzaries]

could anyone tell me what side of the rear garden is my fence

[Ethel]

Not without looking at your deeds.

[bonzaries]

thanks for the reply Ethel
does that mean that every garden is different
reguarding which side of the back garden fence is mine

[Ethel]

Yes,

For example, I own the left hand side, the right hand side is party, and my right side neighbours have both their sides as party.

[buildersmate]

Yupp. There's no default rule or law.

[Nether Edge]

Except that a retaining wall is nearly always owned/maintainable by owner of land on the higher side.