hi kelly
yes they give training in a phd (but first u need to convince your potential supervisor/uni that you can do a phd in something of which u dont have background)
Dont know about UCL, sorry.
Without MSc is not a massive disadvantage. If you have an excellent CGPA for your 1st degree, should be ok.
Supervisors are usually human.
Phd life is like a christmas tree:
stars, angels, presents you like, presents you don't like, lights, trimmings, nettles (!)
I do like 6 days a week, and yes we can work part time.
And we all get stressed.
good luck!
:-) satchi