[JonnyA]

thanks for the replies,guys.
I've a C-tek charger so I'll put that on to make sure it is fully upto charge and see if that makes a difference.
A bit of an update, we were out on saturday morning when we went to start it to head home pressing the start button failed to start the car but we did get a 'buzzing' noise repeated a couple of times from the passenger side of the front of the car (battery/control area?) this happened 2/3 times. turned ignition off then retried and it started fine.

As it sounds as though my thoughts on the battery may be on the right lines i am tempted to get a new battery any way, not having the car working correctly is driving my wife pippy