I don't have much experience with the job market north of the border, but I'd say your situation would be atypical. I'm outside of London and have seen what you've described but the reality is that there is a shortage of people with the skills you've described in that theoretical role. I'd advise you line up 4-5 interviews and just go and see how they work out. With 7 years experience I'd expect you to be able to walk into a lot of positions without fuss which pay much much more than £19k.