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You are here: BAILII >> Databases >> England and Wales Court of Appeal (Civil Division) Decisions >> Stanley & Anor v Rawlinson & Anor [2011] EWCA Civ 405 (12 April 2011) URL: http://www.bailii.org/ew/cases/EWCA/Civ/2011/405.html Cite as: [2011] EWCA Civ 405 |
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ON APPEAL FROM CHELMSFORD COUNTY COURT
His Honour Judge Moloney QC
7IP03444
Strand, London, WC2A 2LL |
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B e f o r e :
LORD JUSTICE TOMLINSON
and
MRS JUSTICE BARON
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Stanley & Anr |
Appellants |
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- and - |
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Rawlinson & Anr |
Respondents |
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Kevin Leigh (instructed by Ellisons Solicitors) for the Respondents
Hearing date : 16 March 2011
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Crown Copyright ©
Lord Justice Tomlinson :
". . . those works were so minor in nature, as far as any contact with the wall or disturbance of the adjacent soil is concerned, that the Claimants have failed to persuade me on the balance of probability that the works led to any increase in the pressure or other forces exerted on the wall by the Defendants' land or activities. From this it must follow that the condition of the wall was not materially affected by the works, that its collapse was probably due to other causes, in particular the combination of high winds with its pre-existent age and condition."
In the light of the history I have recounted this is perhaps an unsurprising conclusion.
"7. As to the prior condition of the wall, there was a substantial measure of agreement between them. Both now accept:
a. that the wall is brick-built and is of considerable age, probably mid 19th century;
b. That prior to its collapse it had for some years shown a perceptible lean towards the Claimants' property (some 80mm. on a height of about 1.50 metres according to Mr Leeds);
c. That that lean was probably (Mr Leeds) or possibly (Mr Croucher) the consequence of the action of tree roots over a long period, there being a fig tree on the Claimants' side and two Scots pines on the Defendants' side in fairly close proximity to the collapsed section of the wall;
d. That the greater the lean in a wall, the more vulnerable it is to wind pressure in the direction of the lean;
e. That although at the time of construction the ground levels may have been much the same on both sides of the wall (it was not specifically constructed as a retaining wall) for many years prior to the commencement of the works the ground level on the Defendants' side had been appreciably higher than on the Claimants'; the experts' plans and trial pits show a difference in height above ground level of some 6 courses of brick or 500mm, though the difference varied somewhat along the length of the wall, and old photographs indicate that the situation has not changed much since at least the 1980s.
8. As to the nature and extent of the works at the time of the collapse, much of the experts' previous research has been rendered redundant by the production of the contemporary photographs referred to above and the evidence of Mrs Rawlinson as to the course the works took (which the Claimants were not in a position effectively to challenge). In summary she told me that the kitchen and outbuilding works were dealt with first, and the resurfacing left till last; this is consistent with the photographs which show those building jobs substantially complete. As to the resurfacing, the first step was to break up and lift the old concrete on part of the back yard; this was not done mechanically but by hand with pickaxe and spade. The resulting earth, broken concrete and brick was then spread, again by hand, over the whole yard in such a way as to level off the previous slight slope or gradient. This hardcore was then compacted and levelled by hand with shovels; hoggin was laid on top, and finally a layer of shingle. I accept this account. In the light of the photographs and my finding as to their date, it follows that the wall fell at the time just after the hardcore had been spread over the whole areas, but immediately before it had been compacted, since the photographs clearly show it in an irregular uncompacted state. At this stage, before compaction, the height of soil against the wall on the Rawlinson's side may have been raised by a small amount, particularly where the former gradient had been levelled up; subsequently, after compaction, the height is little different from its original level."
"i. Originally they were under the false impression that the works had involved the Defendants bringing large quantities of soil onto the yard from elsewhere, heaping it high against the wall, and compacting it, perhaps mechanically. (If so, it is plainly likely that there would have been an increase, perhaps a substantial one, in the forces transmitted from the Defendants' land to the Claimants' wall, whether by means of the weight of the soil, the forces associated with its compaction, or the pressure of water contained within or accumulated in it, and one can well see how such forces applied to an already leaning wall might have caused it to tilt further and increased its vulnerability to wind pressure.)
ii. Upon it becoming clear that no such new soil had been brought on to the site, the weight point lost force, but Mr Croucher's last opinion before trial was that a similar result would follow from "the sideways pressures which result from compaction of the ground to consolidate it, together with rainwater getting into the soil against the wall".
iii. At trial it became clear that there had been no compaction either before the wall fell, but Mr Croucher valiantly maintained that nevertheless the breaking up of the concrete and the disturbance of the soil would have reduced the binding effect within the soil, and increased its tendency to absorb water, thus increasing the hydrostatic pressure against the wall and the soil's ability to transmit surface loads."
" that the presence of uncompacted soil, as seen in the photographs, could not cause the wall to collapse; as to the question of trapped water and its effects, he said that while the presence of such water over a long period might have an effect on a wall, here the soil was sandy and granular with no clay base and the rainwater would easily drain away. His overall view was that this was an old wall which had already become very vulnerable. If the works had exerted any appreciable forces on the wall, it would have fallen even before the high winds; as it was the wind alone was a sufficient explanation." (Judgment paragraph 10)
"pointed out that it not only the speed of the wind, but its direction and the effect of local topography, which determines its effect on particular buildings, so that a mere record of wind speed in another location is of little or no evidential value as to the forces previously exerted on this wall. (As stated at 7(d) above, the experts are agreed that the direction of the wind is highly material to its effect on the wall.)" (Judgment paragraph 11)
"Mr Croucher's academic and professional qualifications are a good deal higher than Mr Leeds's, but both are men with more than 30 years' experience in structural engineering and design. Mr Leeds gave his evidence before me in a frank and clear manner, and stated his opinions without apparent regard for their likely effect on the Defendants' case. As I have indicated, Mr Croucher's conclusions remained favourable to the Claimants notwithstanding adverse developments in the evidence. Also, I was shown correspondence between him and the Claimants in which he appeared to go beyond the usual role of an expert witness by advising them on the evidence they needed to meet the opposing case; when taxed on this in cross-examination he maintained that he owed a dual duty to the Court and to his "client". When choosing between the two, I would generally therefore favour Mr Leeds's evidence, all else being equal."
The judge then expressed his conclusion to which I have already referred at paragraph 5 above, adding that his assessment that the works were minor in nature as far as any contact with the wall or disturbance of the adjacent soil is concerned was informed by the views of both experts.
"Now, the extent to which that takes place I can't say. It's very easy to over-egg the pudding, but it is nevertheless, I think, a consideration."
"35.3(1) It is the duty of experts to help the court on matters within their expertise.
(2) This duty overrides any obligation to the person from whom experts have received instructions or by whom they are paid."
Practice Direction 35 at paragraph 4.1 explains how experts must approach their task when giving or preparing evidence for the purpose of proceedings:-
"4.1 Experts always owe a duty to exercise reasonable skill and care to those instructing them, and to comply with any relevant code of ethics. However when they are instructed to give or prepare evidence for the purpose of civil proceedings in England and Wales they have an overriding duty to help the court on matters within their expertise (CPR 35.3). This duty overrides any obligation to the person instructing or paying them. Experts must not serve the exclusive interest of those who retain them."
Experts are often involved in the investigation and preparation of a case from an early stage. There is nothing inherently objectionable, improper or inappropriate about an expert advising his client on the evidence needed to meet the opposing case, indeed it is often likely to be the professional duty of an expert to proffer just such advice. The opinion of an expert is often if not usually dependent upon the precise nature of a factual situation which he must to some extent assume to have existed. There is nothing improper in pointing out to a client that his case would be improved if certain assumed features of an incident can be shown not in fact to have occurred, or if conversely features assumed to have been absent can in fact be shown to have been present. The judge's criticism of Mr Croucher was in my view in this respect misplaced. More pertinently however Mr Croucher did observe in his email "We need to be very careful to avoid putting too much emphasis on the treatment of the ground on Mr and Mrs Rawlinson's side prior to the collapse of the wall." That cautious approach foreshadows that which he adopted when introducing the rainwater theory in his examination in chief.
"Water pressures on the retained sides of the walls and their foundations below ground level are unlikely to occur due to the topography and nature of the subsoil."
In answers given to the judge and in cross-examination Mr Croucher gave no satisfactory explanation as why the same was not equally true of the south-western wall. Indeed he appears to have accepted that the only reason for not in his report treating the significance of hydrostatic pressure on an equal footing for both walls was his assumption, subsequently falsified, that the resurfacing works involved raising the ground level on the Rawlinsons' side.
"However, in order for insurance companies to be able to address the validity of a weather-related claim in a practical, timely and fair way, weather conditions at the closest neighbouring reporting stations are used to inform their response. This is the practice across the insurance industry and the approach is recognised by the Financial Ombudsman . . ."
This industry practice is no doubt a practical initial approach to claims handling, but it does not assist here and it does not detract from the accuracy of Mr Leeds' evidence on the point. I cannot therefore accept Mr Newman's submission that the evidence contained in the report of Dr Dorling could have had an important influence on the trial because it challenges the evidence given by Mr Leeds. It follows that on that ground alone I would not admit the fresh evidence. It is unnecessary to consider to what extent the traditional Ladd v Marshall [1954] 1 WLR 1489 principles should continue to inform the admission of fresh evidence by this court. However I would just observe that the submission by Mr Newman, that it only became apparent during the course of the trial that such evidence could be required in order to rebut the evidence of Mr Leeds, is a grotesque distortion of what in fact occurred. It was the Claimants who, without explanation and without introduction of fresh supporting expert evidence or any other foreshadowing of the point sought to be made, put into the trial bundle shortly before trial the evidence as to wind speeds recorded at Wattisham over the previous fourteen years. They can hardly complain that at trial Mr Leeds expressed a view about its relevance which he in turn had had no previous opportunity to adumbrate. The evidence of Dr Dorling could on any showing with reasonable diligence have been made available for use at trial. Invocation of the overriding objective and reference to "an unfair playing field" can hardly lead in such circumstances to the introduction of fresh evidence necessitating a retrial. As it is, for the reasons I have given, the fresh evidence is in any event of no assistance to the Claimants.
Mrs Justice Baron
Lord Justice Laws
Note 1 In the light of the more detailed report of Dr Dorling to which I refer below, it may be a moot point whether a gust of that magnitude was recorded overnight 6/7 October as opposed to later in the day on 7 October. The trial was conducted on the agreed basis that there were high winds in the night and that this was the immediate cause of the collapse. [Back]