Think the woman could be Kerry McCarthy (Bristol East), but don't quote me on that! I think the final male on your list is Alex Chalk (Cheltenham). Not sure who the welsh guy is.
@Binkie4 True, Carol did say her preference would be a main chamber debate. Then also said a Westminster Hall debate with a main chamber one later would be acceptable as long as we got that main chamber debate.
Another thought, when Bob Blackman was pushing for WH debate, he asked what the aim of having a debate was other than to raise awareness. (Starts at 14:39:22).
Carol proposed two aims, firstly impressing upon them how important raising awareness is, both of politicians and with medical professionals, and secondly to call upon the government to take a more serious position in terms of biomedical research.
Although I agree with both of those things I worry the second is a little weak in that it doesn't define any concrete action, or give a target of so much funding to aim for in the next 2 years say..
Bob Blackman suggested by having another Westminster Hall debate the MPs could formulate a suitable motion calling on the government to actually do something that they could then bring back to the commons. My impression here was that this may actually be a fairly sensible suggestion, albeit frustrating that we would have to wait until the autumn for anything to get back to the commons.