The appellant, Hewden Tower Cranes Limited, had hired out a crane to the first respondent, Yarm Road Limited, to construct a building at Canary Wharf. The contract between Yarm and Hewden incorporated, among other things, the Model of Conditions of Plant Hire and Yarm's standard terms and conditions. The crane collapsed during the process of "climbing", and in the court proceedings that ensued, the claimants and the defendant each tried to hold the other liable by relying upon different sub-sections of Clause 13 of the Model Conditions of Plant Hire. Several preliminary issues relating to the construction of the Model of Conditions of Plant Hire and their relationship to Yarm's standard terms and conditions were ordered to be tried, and the judge at first instance found in favour of Yarm.
The Court of Appeal was asked to review the findings of the judge on five of the preliminary issues, which were as follows:

(i) Whether the climbing operation fell within the meaning of "erection of any plant" in sub-clause 13(c)(ii) relied upon by Yarm;

(ii) Whether the climbing operation was under the exclusive control of Hewden or its agents;

(iii) Whether the individuals who undertook the climbing operation were not under the direction and control of Yarm for the purposes of Clause 8;

(iv) Whether Hewden was entitled to be indemnified by Yarm in relation to the tower crane's collapse pursuant to Clause 8 or Clause 13(b); and

(v) Whether Clause 11 of Yarm's standard terms and conditions prevailed over the terms of the Model Conditions of Plant Hire.