I think I've grasped it... although I haven't dared to venture into the SSGCR 2002 yet!
The answer, I think is in the Supply of Goods and Services Act 1982 - it states in section 1 that it applies to the transfer of goods except in an excepted contract... What is an excepted contract - well, s1(2)(a) tells us it doesn't apply to a contratc for the "sale of goods". So - my interpreation is such that it IMPLIES that the two will never apply together (SoGA 1979 and SoGSA 1982).
Therefore - if a service has been provided (e.g. free fitting for a kitchen or windows) and you wish to maintain the right to have an action for that service then it will have to be the SoGSA 1982 that you seek redress under for faulty goods. Clearly the SoGSA 1982 does include the same implied conditions of s13-15 of the SoGA 1979 (s3-5 of SoGSA 1982).
Having read the jouranl article - 'Remedying The Unfit Fitted Kitchen', Robert Bradgate (LQR 2004, 120(Oct), 558-563) - it states (at p561) that the two Acts are "mutually exclusive". I've intrepreted that phrase as support for my conclusion that the two Acts cannot apply simultaneously under the same contract? However, I'm not totally convinced I'm correct in this assumprtion although I can find no further clarification.
The way I intend to deal with any question on "transfer of goods" is to apply the SGSA 1982 whenever a service has been involved, and iobviously the SGA 1979 when it is a pure transfer of goods and no service.
Is a consolidating Act required... well, in my opinion, it'd sure make things a sight more straightforward. I've wasted a good deal of time and offort coming to a conclusion that I'm STILL not certain about however it is one that seems most logical and justifiable.