We have a fence made up of wooden panels in our back garden.
I am guessing they are 6 ft by 6ft and between them they have concrete dividing poles with slats in the side like this.
http://www.wickes.co.uk/slotted-concrete-fence-post-24m/invt/540063/?source=123_74&tmcampid=104&tmad=c&tmplaceref=PPC_ggl_0006635&gclid=CKC1-6WCy7QCFQzKtAod2RcAXAWe only moved in last christmas, and in February when it was windy a panel blew out and a couple of fence posts were tipped about a foot from the vertical. I have no idea how many times this has happened in the past, but my neighbour did mention the previous homw owner normally "fixed" the fence.
When I looked at the bottom they had a small ball of concrete maybe a foot deep at the bottom that was intended to keep the fence upright. When I looked up fixing fences on the internet, it suggested that the concrete should be at least 2 foot down in to the ground.
I figured if we put them back vertical and made a bigger hole and poured more concrete/postmix in they would have a better chance of staying up. The missus didn't rate my fence fixing skills (probably correctly) and so we got some fencers to come in while I was out.
They billed us for a couple of new fence posts, some concrete/postmix and labour. I didn't see what they did, and wasn't entirely convinced that the fence posts were different from the previous ones, but they had certainly churned up the garden around the fence posts.
This winter we have had some pretty serious rain in the last few weeks, and the clay soil at the bottom of the fence turned pretty muddy and sloppy.
I am guessing we had a bit of wind while I was away for christmas, and the same panel and at least one of the "replacement" fence posts has done the same as last year. The panel has blown out and we have one post at a 10 degree angle to the vertical (it has probably been gently tipping more and more throughout the year, as before christmas we did notice it didn't look as straight as it once did). Looking at the bottom of the fence post, the "replacement" doesn't appear to have much concrete around it.
I have also read that the ground can get weakened around the fence posts, so you get a better/stronger fence if you use different holes.
The fence is definitely our responsibility. The panel that has come out looks a bit worse for wear, but the others don't look that bad/in need of replacement.
What is the best way forward?
1. Getting some fencers back to do a similar repair to last year. If so, what should I be insisting on?
2. The previous plan A, which was bunging something in the hole to strengthen around the base (either more concrete/postmix, ballast or something else)
3. Building a new fence with different holes.
Finally, should I wait until the ground has firmed up a bit, or do it while the ground is sloppy mud?
I am fairly loathe to do 3, as I guess it is going to be expensive and is likely to be disruptive to all the plants I have just put in. I am also pretty sure that I don't want to go outside in winter and try to break up the existing concrete balls at the bottom of the fence posts. If that was the best thing to do, I'd rather just get a fencing firm in (though almost certainly a different one!)
Hope that is not too TLDR, though fear it may be. Sorry.
Cheers