After this, this is as sketchy as it gets. Head out of Hognaston, up the hill. Just past the pub, take the next right, and head down the road right to the bottom and follow it round to the left. Now, there are signs saying that it's not a public footpath, but OS Maps says it is, so not sure what the crack is here, and there are other public footpath signs further down.
At the end of the field, there's a metal turnstile, the paths here were wild when we did this, so be prepared for that. Once you get out of the other side, keep an eye out for all of the signs for non-footpaths. The farmer that found us when we got lost was great, but his fellow farmers weren't, as the kids say, best pleased that we'd wandered up the wrong way. Note to the farmers actually - less signs about where the footpath is not, more signs about where it actually is would be helpful.