£16,000 of old dog
If you buy a £16000 aircraft you can expect to spend around £20000 to get it into any sort of state to do any reliable work.
I would sell you one of my Cessna 152's but you would have to pay £35,000 for it but you would get an aircraft that you would not have to spend any money on for the next 5-10 years.
Safe flying is never cheap but if you want inexpensive flying the LAA is the way to go.