“… have regard to all the circumstances of the case and in particular the form of award which best meets the claimant’s needs, having regard to the factors set out in the practice direction.”
“(i) accuracy of match of the particular data series to the loss or expenditure being compensated; (ii) authority of the collector of the data; (iii) statistical reliability; (iv) accessibility; (v) consistency over time; (vi) reproducibility in the future; (vii) simplicity and consistency in application.”