This Court of Appeal decision concerned the circumstances in which the award to a Claimant who beats its own Part 36 Offer of some or all of the specified relief under CPR 36.17 may be considered to be unjust.
Can a Part 36 Offer which excludes interest be validly made either generally or in the context of detailed assessment proceedings?
It is been an issue on which a number of judges have held diverging views.
In the present case, His Honour Judge Dight CBE, upholding Deputy Master Campbell’s first instance decision, had concluded that an offer exclusive of interest cannot be a valid Part 36 offer.
In contrast, in a matter we reported in May, Horne v Prescot (No 1) Ltd  EWHC 1322 (QB), Nicol J, dismissing an appeal from Master Nagalingam, held that, at least in the context of detailed assessment proceedings, an offer excluding interest can be an effective Part 36 offer.
So, what is the answer?
Mr Justice O’Farrell rounded up the authorities on CPR 36.17 and found that a Claimant who had beaten its own Part 36 Offer of £875,000 by less than £5,000 was nonetheless entitled to the benefits conferred by the rule, including enhanced interest on damages and costs, indemnity costs from 21 days after the date of the offer and an additional amount of £65,123.77.
In November last year we reported on the case of Finnegan v Frank Spiers  EWHC 3064 (Ch) in which Mr Justice Birss held that there is no jurisdiction to award a payment on account under CPR 44.2(8) in circumstances where a claim is settled by way of acceptance of a Part 36 Offer.
This was an appeal against the decision of Master McCloud not to award the claimant a 10% ‘additional amount’ under CPR 36.17(4) on grounds that it would be disproportionate and unjust to do so where the claimant had beaten its own offer by just £7,000 on a bill assessed at £431,813.05.
The Court of Appeal has dismissed a challenge to the validity of a Part 36 Offer on grounds that i) it was made in respect of both a claim and a proposed counterclaim which had yet to be pleaded; and it ii) contained provision for interest to accrue at a particular rate after the expiry of the “Relevant Period”