So... update time.
Attended the interview and was a bit of a disaster tbh. I went in confident that i had the skills and experience they were looking for, and was worried by the salary that the job was going to be far less complex than they made out.
Turns out it wasn't. It was more complex. They wanted somebody who has not only supported this type of infrastructure, but somebody who has deployed and installed this type of stuff from scratch. And the scope of the setup / support work extended to everything in the data centre, switches, routers, VMs, O/S, SAN configuration, VLANS, VMs, linux, apache, IIS, THE LOT.
In our current company, we have a specialized networking team who deal soley with the networking, another team that deals specifically with the hardware installation in the data centre, another team responsible for all the O/S builds and software installs and another team soley responsible for the VMware stuff etc..
Turns out they wanted somebody with all these skills for 16-22k !
Don't think i'll be getting this then. Thoroguhly depressed as i'm obviously not as advanced in my career as i thought i was.