The BPS has accredited the following universities as offering courses that contribute either towards either a PhD in psychology or a PsyD in psychology:
http://www.bps.org.uk/careers/accred...s_flag=current
Any course which can contribute towards a doctoral qualification (a PhD, MD, PsyD degree) count as 'doctoral level courses'.
The BPS also provides courses that contribute toward a 'statement of equivalence' so that people who are not accredited to practice clinical psychology in the UK may practice in the UK:
http://www.bps.org.uk/careers/society_qual/clinical.cfm
Such courses may be considered 'doctoral level' in the sense that they are usually restricted to people who have entry to post-graduate study. But they aren't 'doctoral level' in the sense of contributing towards a PhD or PsyD qualification.
But really... Whether or not they are 'doctoral level certificates' doesn't make or break obtaining them being a significant achievement!