The issue of whether a claimant or the tortfeasor should bear the burden of any delays in the carrying out of repairs was considered in the United Kingdom in Clark v Tull (t/a Ardington Electrical Services) [2002] EWCA Civ 510. In that case delays in repairs occurred as a result of the workloads of the smash repairer. Lord Justice Aldous referred to the conduct of the plaintiffs claiming loss of use and stated at paragraph 12:
"They both appear to have acted reasonably in placing the cars in the hands of respectable repairers and there were no supervening events. Further delays of that order were foreseeable. The extra loss caused by the delay in the repair must fall on the tortfeasor as there was no failure to mitigate."
The decision in Clark followed an earlier United Kingdom decision of Mattocks v Mann [1973] RTR 13. In that case Ms Mattocks took her vehicle to a reputable repairer. It was estimated that it would take 6 weeks to repair, but it took 12 weeks to complete. The vehicle was held pending payment for nearly 7 months after the repairs had been started. The Court of Appeal held that Mrs Mattocks was entitled to recover the cost of hiring the replacement vehicle for the entire period. Beldam LJ said at page 18:
"For a supervening cause or a failure to mitigate to relieve a defendant of a period of hire there must, in my judgment, be a finding of some conduct on her part or on the part of someone for whom she is in law responsible, or indeed or a third party, which can truly be said to be an independent cause of loss of her car for that period".
The Court agrees with the views expressed in these decisions that it should be the tortfeasor that bears the cost associated with delays caused in these circumstances. It is foreseeable that there may be delays when vehicles are given to a repairer due to either the need to obtain parts, or due to heavy workloads for repairers or insurance assessors having competing priorities. These delays, while caused by third persons, are inexorably linked to the original damage caused by the tortfeasor and cannot be considered to be a supervening or independent cause of the damage. The plaintiff is not, at law, responsible for the conduct of her insurer or the repairer.