How to fund a 2nd master's degree (UK), or should I directly go for a PhD? I will receive my master's degree soon. Even though it was a nice program, I found out I'm more interested in something else. Now, I'm thinking should I do another MSc (one-year) in the other field before starting a PhD? The MSc program I'm interested in is given in the UK. I think (hope) I'm so good a student, that they would happily take me in. 

Well, then there comes the question how to fund the 2nd master's degree.. In general, are master's degrees (fully) funded in the UK? I'm european if that matters. I would also appreciate if you can point me to grant-providing institutions.
In general there is no funding available for MSc courses in the UK. In some cases there are 1+3 courses (i.e., a 1 year MSc and a 3 year PhD) where the MSc course is funded, but in general this is not the case.

One benefit of this is that the admissions criteria for MSc courses are pretty low. Essentially anyone with a 2i or higher degree classification can find a program willing to accept them.