I'm off out with the tillage spreader to spin some more seed on in the thin patches.
Home saved seed and a fert spinner. It can't get any cheaper. It's only to try and thicken up the gappy bits.You need at least 3 true leaves to stand a chance of surviving the winter and time is running out unless we have a very mild October, November & December. If you can do it cheaply and easily I suppose it's worth a try.