🤔 What is this?

[AlexaWhatsMyUsername]

What’s this? (Ignore yellow petals - they have fallen from laburnum above).

The leaves are wet (not naturally shiny). It keeps getting through the fence from our next door neighbours garden.

Alder?

Looks like a blackberry bush to me?

Brambles? Is it prickly?

Just a bramble.

Brambles

Looks like blackberry/brambles to me. They're rampant. Hacking them back repeatedly is the only way, unless you really like blackberries. Everywhere.

Brambles. Will spread. Very dominant. Tough roots in hard to reach places

As everyone says, brambles. If it’s left undisturbed you’ll have blackberries - and a horrible no-go thorny patch. Just keep hacking back.

Bramble