How much do you have in your savings?

More than that, but I have no mortgage anymore, and I'm old.
50/30/20 rule says that 20% of your salary (after tax) should be put into savings.
So for £28,000 based on 1250L tax code you should be putting approximately £375 p/m away into savings (or about £360ish if you want to deduct any pension contributions - I've worked this out based on 4% of your salary going into a pension).

More that that, but I'm old mortgage free and feel more comfortable with more as I now worry about my employability if I lost my current job. Our current savings would keep us going for more than a year if we were careful.

When I was in my 20s I had more debt than savings, 30s we had ds/maternity leave but mostly broke even. It wasn't until our 40s we managed to start to save.