I’d just be honest, if they ask at all. Say that you’d left your previous job because it wasn’t right for you, and that you were looking for work and that it took a while to find something appropriate because there wasn’t much about, at least not anything that you were being put forward for by agents. Pff! Recruitment agents - aren’t they terrible!
What a company doesn’t want to hear was that you left your last job under a cloud and it took you ages to find something because you couldn’t be bothered looking for a job.