Blocked toilet- what can I do?

Sure - it's literal, to be honest. A toilet is a very simple thing - just the bowl you use, and a u-bend (literally a u-shaped pipe) to stop smells coming up from the drain by keeping some water in the bottom of the toilet...after which it's all going into the soil pipe - the thick pipe you'll see running up the outside of every house) then down into the main drain. So if it's your toilet blocking, it's a blockage you can almost certainly deal with yourself, because it's basically something that is stuck trying to get around the u-bend. So you can literally just put your hand down the toilet and push it through - gloves recommended. After it's left the toilet, it's highly unlikely to get stuck in the soil pipe, and that's generally larger in diameter than your toilet pipe, and gravity will do the work. A broken soil pipe might allow toilet roll and other solids to gather, though. The pipes underground? They're the ones that connect to the sewer system...eventually. Sometimes they might run through lots of other gardens or drains first, so there's plenty of opportunities for things to block the pipes. You could even find that it's your neighbour flushing wipes down their toilet that is causing a blockage on your pipe etc. which is why it needs a proper inspection....though given your LL's guys have been able to unblock it each time, I suspect they know what the problem might be. Toilet blockages are, I would say, more obvious...because they happen 'in the moment'. Basically, it's your last movement that has blocked it, and you might even be able to see it staring back at you at the bottom of the bowl, depending on how clear the water is. I'll be honest I've never had a toilet back up all the way from the main drain (or wherever your problem is) so it could be that you'd see similar results - one use it flushes, the next it's suddenly not going down any more...but obviously you won't see the culprit at the bottom. I would also guess than it wouldn't fill all the way up, as it's not the toilet that's blocked, but all the piping behind it that has backed up. At this point, it's worth pointing out that you can get elbow-length rubber gloves, if you feel so inclined to 'go fishing'. Also note, most toilets either block on the regular (mine does, it's a crap design - pun accepted), or will almost certainly never block. It's more common to partially block, where a stubborn turd won't flush and some loo roll gets wrapped up around it. And on that note, I'm going to have a salad for lunch instead of my original plan of sausages and mash.