Has anyone got any advice on how I can get a job as a Unix/Solaris system administrator?

My current job is supporting an application that runs on Solaris servers.

I have very minimal Solaris/Unix skills but would like to expand on them with the aim of getting a junior sys admin role. I have access to the servers running Solaris so can get some hands on experience but am not sure how to gain more experience and knowledge.

Eventually I would like to work in the financial sector as a sys admin. That is my dream

Any advice would be great.

I'm currently living and working in London if that is of use.

Thanks.