Confidence: I'm as sure as I can be.
Notes: They are both ant-mimics so the patterning is very similar.
The abdominal 'break up' stripes are yellow and not white.
The carapace shape is wrong for a gnaphosid, but right for steatoda (or asagena even).
The carapace is dark.
The leg colouring ~ dark bands on femur and tibia for the steatoda, whereas m.pulicaria only has dark femur.