Update: So I quit my job as a doctor shortly after starting this thread. My first job was doing marketing and webdesign for a telemedicine startup. I enjoyed the job and had great colleagues, but the company went bust 6 months later and we all left. I left with some great friends there, and ran a PR company with one of my former colleagues for a while, but I found the nature of full-time PR (you're on the hunt round the clock for media opportunities for your clients) meant I had eventually given up my hobbies and other interests.
I spent the past two months doing a lot of DIY and applying for hundreds of web dev, data analytics, creative technologist jobs, and haven't been successful because I have no agency experience and I read like a bit of a jack of all trades. I also find the tick-box approach of recruiters and HR departments tiring. Are all jobs like this? Recently starting to think about building a niche using my various skills and freelancing/contracting.
I have quite a lot of technical/creative experience, but it is mostly built up through personal projects and hobbies: Webdesign, graphic design and branding (I designed the logo and event publicity for City Cycle Style 2010), engineering CAD, Google Analytics/content marketing/SEO/paid advertising.
Now to find a niche and start marketing myself...