This is business/work, you just tell them what you want if they ask
I recently got offered a new position and was asked what was I expecting salary wise, there wasn't even a range to go on, it really was pluck a figure out the air.
So I chose a number that was a healthy increase, but wasn't too high for my experience and too big a jump from what I was on now (even though it's a manager/consultant type job).
I said what I wanted, they offered more so I said thank you and took it
Now I know specifically what grade I'll be on in the company I now know that they are getting me 'cheap', but it's all good as still a very good salary imho and just gives me plenty of room to move up within the band
And not wanting to bang the drum but I'd agree that with 6 years exp you should be able to get something paying more.
I'm down in Fox land in the darkest depths of Devon where high paying IT jobs aren't exactly abundant, but even then I'd be expecting an experienced server support person to be getting at least 30k.
Where are you looking for jobs to not find any up North, I can think of a few companies off the top of my head who have large offices up there plus you've got plenty of big cities around there haven't you?
Don't read too much into requirements on job specs, they'll ask for everything but by no means will they get anyone with all that, especially not at those salaries! One of my previous jobs had a massive list of stuff they wanted people to know, not all of it relevant, that I didn't have.
Funny exactly the same happened to me, I was straight, asked for a figure that was a healthy increase on what I get now, and the company added 5K to it and offered me the job.
And 22K for 6 years? When I graduated 6 years ago I was working in Sheffield and got paid that - an IT professional with that experience should be >30K at least.
