Left the house late (as usual) and jumped in the car, turned the key and was greeted by some rhythmical clicking, but no sign of the car actually starting. Called 1st Response and spoke to Scott at 1.30pm, he diagnosed the issue over the phone, stated all costs up front, and arrived at my building at 2.50pm (the shop is 40 minutes from where I live). Car fixed and running a treat, within about 20 mins which included some clean up on the battery terminals and all done with a professional and courteous manner.
For obvious reasons I hope I never need to call 1st Response again, but when I inevitably need help with a car, they will be without doubt the first ones I call. Excellent!