Thanks for the heads up there Wayne, as you suspected my serial settings were wrong
however readline() would still not work correctly with 'NMEA out' enabled but work fine with 'Text out'!
However I have ended up using the following approach - Thanks StackOverflow
Code:
buffer = ''
while True:
buffer = buffer + ser.read(ser.inWaiting())
if '\n' in buffer:
lines = buffer.split('\n') # Splits buffer block into lines
last_received = lines[-2]
buffer = lines[-1]
print last_received
which is working pretty much how I want it to
