top one looks to be asparagus fern, the second a Holly ( Ilex aquifolium?) and the third Choisya ternata

I think the first one could be fennel. It has roots to Australia and make sure you dead-head it, or you'll get loads of seedlings everywhere - all difficult to remove!

I agree about 2 and 3.

First one is fennel - bruise the leaves, they have a scent - its a herb, great with fish and in potato salad. The holly in the second picture is probably self set - its too close to the fence and will get huge, so it might be a good idea to remove it now, while you still can. Keep an eye out for other ones, they pop up all over the place. Agree Choisya ternata for last one.

Thanks so much.

Fennel (Foeniculum vulgare) is the first one.
Holly (Ilex aquafolium) is the second one and I've no idea of the third.