UK company using fetal stem cells

A UK company called ReNeuron is using fetal stem cells which they hope will treat diseases like Parkinsons, Huntingtons and diabetes.  They explain why they have chosen to use fetal stem cells:

Early human embryonic stem cells (or 'hES' cells) are capable of forming cells from any tissues. However, the cells are likely to form tumours when transplanted.

As the tissues develop through the fetal and adult stages, the resident stem cell populations have a progressively diminished developmental potential and lose their inherent tumour- forming capacity, becoming somatic stem cells, also known as lineage- or tissue-restricted stem cells. Somatic stem cells are therefore likely to be the safest type for use in cell therapy treatments.

ReNeuron has built its technology platform around human somatic stem cells derived from the fetus, which we believe offer the most viable route to the clinic for stem cell therapy.

See the lovely diagram from their website?  I think some thing may be missing.  Could it be the aborted fetus from which they extracted their tissue.  Of course ReNeuron does not mention where they get their fetal tissue and I don't want to accuse them of anything without proof, so I have writtten them to ask where they get their fetal tissue.  Let's see what they say...