fivecandles, actually a Pharmacy degree, MPharm (not pharmacology, which is different and does not allow registration as a Pharmacist) is only as much the beginning of a route as a Medical degree. On completion of a four year MPharm degree, students will complete a pre-registration year, followed by a final set of exams after which they can register with the Health Professionals Council (HPC). A similar procedure is also true for Biomedical Science, except that most courses have the required year working in a lab built into the course as a sandwich year. Both of these are respected degrees and entry requirements for the former are similar to those for medicine. This is not all that different to medicine where you first complete a BMedSci degree (3 years) and then enter a further two years in pre-registration posts before being able to register with the General Medical Council (GMC).
You stated that: "No degree is a route into a job except medicine." and "You always have to do a further qualification like a PGCE". I am simply pointing out that you do not always have to do a further qualification like a PGCE, there is a direct route. Yes, it may be less respected, but I don't believe your original point was how respected the direct route to e.g. teaching was.
Other examples, as I pointed out above, are pretty much the same as for medicine.
Further, degrees such as Pharmacy and Biomedical Science are the only way into those professions, so a degree in Chemistry, Pharmacology, Biochemistry etc etc, for example will not allow you to register as a Pharmacist. Likewise, a biology degree will not allow you HPC registration to work as a Biomedical Scientist.