Looks a bit like oregano ( oreganum aureum) the golden oregano

Nope, sweet woodruff has narrower leaves in whorls. I know this as golden oregano. As you've discovered it's a toughie, that spreads a bit, but is tenacious and reliable.

I think you've got a stem of goosegrass in there - Pull it out quick before it seeds!

Definately Golden Oregano. A real gem, especially in a dry spot with some sun. Really easy to propagate, just pull out a bit from the side of the plant with some roots attatched and stick in a pot of compost. It will take within a week and carry on like nothing has happened!

I think it is Golden Marjoram. If you squash a leaf between your fingers it will have a lovely herby smell. You can use it in all sorts of cooking and the tips are delicious in mixed salad leaves.

Arn't they one and the same?

Well, I thought so and I googled. Jekka's herb farm agrees that they are the same
http://www.jekkasherbfarm.com/details.asp?productid=275

thanks everyone, did I say thanks before??? I find it difficult to do what I want on here, I did contact the site and was told it was because I am aol, well,I'm not changing that halfway through my contract so will have to soldier on. It does mean though, that whenever I want to add a comment or blog, it often doesn't work, then I can't get to the bit where I can check if it's worked! I'm going out now to water the ground to try and dig a patch in a shady spot, oddly eneough I wanted something for that, and will put some of the oregano in it. I wrote this earlier in a blog but then was asked am I ready to publish, then the page went blank......

Oregano's situation of choice would be sunny and well drained, but as it's tough and a good doer it will probably survive in your shady spot.

Yes I agree, mine grows in a spot which is partially shady and does very well.