we used a cranial osteopath, too, w/dd2, but she is breastfed/expressed breast milk fed.
but whilst waiting on the appointment, there are some things you can do.
have you tried swaddling your baby? that can help. so can carrying him in a sling against your body.
a breastfeeding counsellor also showed me a new way to wind dd2 - i would put her over my forearm and stroke her back - much more effective, IME.
have you tried Dr. Brown's bottles - they are in Boots and i've heard good things about them. also about MAM and Townee Tippee ones.
also, it's REALLY expensive, but Colief can help where Infacol doesn't. it's about a tenner for a small bottle, which lasts about a week, but if you're desperate it might be worth a try.
what formula are you using? a friend has a colicky baby and said she got relief from cow and gate omneo comfort.