Being a 1.5 I don’t need any more speed just a bit more pedal response at low revs
Ah ... now that can be coded all by itself and a good dealer might even do it for you for free during a service or perhaps you can find someone (friend or workshop) who can do it. If you are desperate, you could invest in your own OBD11 or Carista, especially if you would like to tweak other things.
There are 2 settings for the throttle behaviour - Normal (sometimes called gradual) and Direct (sometimes called sport).
Normal is the default and it is basically used to improve fuel economy by eliminating unnecessary throttle increases caused by 'normal' movement of your right foot on the throttle pedal while driving at 'constant' speed. These small movements aren't treated as throttle changes.
Direct basically works like an 'old fashioned' throttle cable where every movement of the pedal alters the throttle position, so it eliminates the lag and sometimes unresponsive feel of the Normal setting.
Do some searching for 'throttle response' on the forum or Google and you will find details of the coding.