section 44 wrote:Common shareholders alone is insufficient. Section 450(5) refers to two or more persons "together" controlling. The key point is "together".
I'm afraid I can't agree. The connected party rule in s.1122(4) CTA 2010 requires two persons to be "acting together" and the rule in s.450(5) only requires you to consider two persons "together". The case Steele v IRC you are referring to is a connected party case not an associated company case.
The difference in wording must mean there is a difference in meaning and for associated companies it is simply a matter of finding common ownership (the irreducible group).
The two companies are associated, there are not necessarily connected.