I dont think your too old, I've certainly heard of older...If your commited to your training.
Flight training is very demanding, and will have its ups and downs....I would recommend doing a trial flight If you haven't already done so, and before you commit to spending thousands of pounds on any course, do your class 1 medical first, its around £350-£400 (forgot exact cost) to make sure your medically fit to fly commercially.
You may want to look at the other considerations of being a pilot, how your hours and working schedual will affect your partner.