the worms may still be digesting material but take a small amount out check it for worms and then leave it to see what germinates.
it should resemble compost you buy. if you can see identifiable plants then it isn't ready. if it looks a uniform material then its useable. the worms will not do the soil any harm.

hope this makes sense.

Um, if your compost heap is cold an anaerobic, its not really suitable for use as a potting compost. If, though, it was produced using a hot aerobic method then it is - hot, aerobic heaps are ones which have been turned at least twice a week, and have reached a minimum temperature of 40degC for five days minimum. Compost produced that way is usually ready for use within 6 months. If your compost has taken 18 months, it doesn't sound like that's the kind of compost you've got, Hank, so its best used as a soil amendment, meaning dig it into your beds and borders.

Ah, I guess mine is anaerobic. It doesn't get hot but there are a great number of worms in from top to bottom which are helping. So I've added a barrowful to one of my borders. It looks decent stuff anyway, certainly nothing identifiable. Thanks

Great stuff for adding to borders and beds...