To add to what others have said, you need to concentrate on intervals for a while. You won't get faster at your 5k if that's the fastest running you do in the week - you need to get used to running short intervals at a higher pace than this, to push up your vO2Max and running economy. In your position, I would be running a bunch of 400 metre repeats at maybe 95-100 seconds per rep, with equal time recoveries, once a week.
I would suggest not "racing" every one - run by all means but you'll end up injured or the fitness will plateau, having said that if your happy to plateau, as long as you rest and listen to your body you should be fine.
Yes, I think I just need the discipline to avoid 'racing' every race. I'm not so worried about injury as much as a kind of overtraining burnout. When you're in good running form, though, it's so hard not to try for a good time each race, and I think that all-out effort too often may well be the kind of thing which leads to overtraining. I did a Parkrun this morning and consciously tried to avoid running it too hard, so maybe that's what I need to do. Certainly I'm not doing anything other than easy runs between the races at the moment, and I've dropped the idea of doing the race tomorrow I was going to (hence the chance to do today's Parkrun).
I'm just hitting a point in the year where for 3 weeks or so the race schedule is VERY busy with races I want to do. That is, there's a 5k or 10k race each Saturday or Sunday, plus another on the Wednesday evening. Now, I know that by doing all of them I'm almost certainly ensuring that I don't get my absolute best time in any of them and I'd be better of targetting a much smaller number of races. Nonetheless, I do plan to run them all!
So, my question is about what other training I should do during this period? Clearly my weekly mileage will be well down, as I'll need to go short and/or easy the day before each race. So theoretically that would suggest my fitness actually declining during the period. But I find it hard to believe this would really happen, given two hard 5k or 10k races each week.
As a little background, I'm a 53 year old runner, typically running 30-40 miles per week with the occasional 50 mile week. I ran my last 5k (a month ago) in 17:30, a time I'm hoping to beat in my next race.
David Lewis 50, you may want to look at the dates of the complaints you're complaining about. They're all from last year, not this year. I would imagine Fat Feet have got their act together rather better this year. Despite my complaints last year, I'd still happily have done it again this year but was unfortunately not able to.