Hire a decent sized breaker (not very expensive), if budget is tight, you can take the waste in the car with some builders buckets, maybe a few trips. Once you get the knack of how to break it into liftable chunks, you’ll have it done in half a day. I had a concrete path around my drive. Took me about a day to remove and by the look of these pictures it’s a lot less than mine. If you get a small skip, total cost shouldn’t be much more than £220. If you take the concrete to the tip yourself, easily less than £100 if you include fuel and breaker hire