Posted: Yesterday at 16:47
This doesn't seem that overgrown to me although I know you've already done some tidying, it's just a mature garden. If you have any evergreen hedges, like conifer you can trim them lightly now to keep them neat over winter. Your can aerate and top dress your grass and prune back shrubs that are really stressing you out but you may risk losing next years flowers if they are an early flowering variety. Really that is all you should do now unless you want to gut the whole thing but that would be pretty pointless at this time of year anyway because it will leave you with an empty quagmire over winter. Wait until spring is underway properly and you will see if you have any dead trees/shrubs or limbs that need removing. This will also help us/you identify what you have in there and the best time of year or way to prune it. That small leaved thing next to your acer (I don't know the name) but it can be tight clipped to allow some more light in. Honeysuckle, virginia creeper and ivy can al be cut back hard and they've survive, that can be done now too.