I'm hoping I could get a year or two out of it still if I was to use something like quickcrete which I can put on with a gun. The fence is upright and not compromised on the other posts. What do you think?
If it seems reasonably solid then probably can be left for a while. You could make it look better but it won't really add any strength.
Needs to be changed really. Moisture gets at the reinforcement bars, rust expands them and cracks the post. It gets progressively worse. Amazing how little strength is in them once they start to go. Give that a whack with a club hammer and most of the the remaining concrete will shatter and fall away. The post then just bends around the bars like a hinge, especially as all the weight is then above the compromised section.
Wow about £30 genuinely thought it would cost in the hundreds. Now to spend a few days watching YouTube videos
The issue isn’t the price of the post, it’s how much concrete there is surrounding it to smash out underground.
Seriously?. Thankfully not. Fences are expensive enough even at current prices. A 3m 100x100 timber fence post from Lawsons is currently about £35! As HappyBuilder says getting the old one out is the main issue. In theory it should be buried in 600mm of concrete. Best to bite the bullet and get digging.