What is this weed please

[Leaningtoweroflisa]

Hi expert gardeners - this started to pop up in my garden last year, didn't know if weed or not, grew and spread vigorously so decided it is a weed. Think it gets little purple flowers on it? It seems to form a clump of quite succulent stems and spread by root. It is quite fragile ie it breaks when I pull it out unless I get it when small.

It's the one in the centre with purpley stems, I realise there are. A lot of weeds in this pic

Oh I don't know what that is . I don't have that in my garden, and it doesn't look like a familiar weed.

It looks like spurge (euphorbia) to me, definitely a weed.

I know - I've been googling British weeds and haven't found anything like it yet - it's not 'fir tree' like enough to be horsetail.

Here are two more pics for identification of it running rampant out in front garden / drive (again complete with more weeds...). One should show how it spreads, the other is a more mature plant.

fenneltea, I don't think it's spurge - no hairy stems and no 'latex' sap in the stems? Leaves are less oval / pointier. Also very soft, not woody even when mature.

Bums. Naughty weird weed. Round-up coming up...

Looks like rosebay willow herb to me.

I know this a an old thread but spotted it when I was looking for something else

You have a variety of purple toadflax there; I have it in the garden. It grows everywhere and also very happy growing in stone walls etc. Bees absolutely love it