Thanks for your response.
When switched on the AC blows only warm air, or hot air if turned up. The outside temp is correct. The fuses are intact.
I have checked and there are no error codes.
The Compressor kicked into life after regassing, but the pipes don't get cold.
Replacement of sensor appeared to trigger the condenser fan, but pipes still don't get cold.
After some research, I'm suspecting the filter inside the AC pipework may be blocked, but I don't have the tools, spare parts or experience to check this.