documentation are completed in accordance with professional actuarial standards 
appropriate to the jurisdictions where the business is written. The selected 
assumptions reflect the actuaries' judgement based on historical data and 
experience combined with information concerning current underwriting, economic, 
judicial, regulatory and other influences on ultimate claim settlements. 
Based on the actuarial indications, the Group selects and records a single point 
estimate separately for each line of business for each underwriting year. The 
single point reserve estimate is management's best estimate which the Group 
considers to be one that has an equal likelihood of developing a redundancy or 
deficiency as the loss experience matures. On a quarterly basis the Group 
analyses and records its loss reserve estimates across over 400 detailed lines 
of business which reflect class of business, geographic location, insurance 
versus reinsurance, proportional versus non-proportional, and treaty versus 
facultative exposures. In addition, a limited number of the Group's largest 
contracts are reviewed individually. 
During the loss settlement period, additional facts regarding claims are 
reported. As this occurs it may be necessary to increase or decrease the unpaid 
losses and loss expense reserves. The actual final liability may be 
significantly different to prior estimates. The Group reviews additional 
reported claim information on a monthly basis. Actual claim experience is 
compared to that expected from the most recent actuarial reserve review to 
highlight significant variances. A complete actuarial analysis by detailed line 
of business including selection of single point estimates is completed 
semi-annually and is reviewed by the Group's management. 
Underwriting year table 
+---------------+----------+----+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
|               |          1999 |        2000 |        2001 |        2002 |        2003 |         2004 |        2005 |         Total | 
|               |           and |             |             |             |             |              |             |               | 
|               |         prior |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
|               |         $'000 |       $'000 |       $'000 |       $'000 |       $'000 |        $'000 |       $'000 |         $'000 | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
|               |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Gross         |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Estimate of cumulative        |             |             |             |             |              |             |               | 
| claims:                       |             |             |             |             |              |             |               | 
+-------------------------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
|               |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| At end of     |    3,022,313  |    367,605  |    386,762  |    590,359  |    821,724  |   1,092,870  |    630,215  |               | 
| underwriting  |               |             |             |             |             |              |             |               | 
| year          |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| One year      |    4,564,137  |    452,324  |    396,996  |    612,137  |    816,546  |     990,260  |    610,599  |               | 
| later         |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Two years     |    4,710,816  |    485,269  |    417,049  |    611,228  |    794,346  |     883,970  |     616,375 |               | 
| later         |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Three years   |    4,755,187  |    507,747  |    441,839  |    654,210  |    786,147  |      874,949 |     629,467 |               | 
| later         |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Four years    |    4,828,948  |    539,694  |    440,855  |    660,908  |     790,476 |      856,061 |             |               | 
| later         |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Five years    |    4,874,927  |    550,212  |    459,255  |     655,037 |     763,564 |              |             |               | 
| later         |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Six years     |    4,883,595  |     563,532 |     467,672 |     652,421 |             |              |             |               | 
| later         |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Seven years   |    4,893,658  |     560,023 |     468,770 |             |             |              |             |               | 
| later         |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Eight years   |     4,874,618 |     560,844 |             |             |             |              |             |               | 
| later         |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Nine years    |     4,858,150 |             |             |             |             |              |             |               | 
| later         |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
|               |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Estimate of   |     4,858,150 |     560,844 |     468,770 |     652,421 |     763,564 |      856,061 |     629,467 |     8,789,277 | 
| cumulative    |               |             |             |             |             |              |             |               | 
| claims as at  |               |             |             |             |             |              |             |               | 
| 31 December   |               |             |             |             |             |              |             |               | 
| 2008          |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
| Cumulative    |   (4,660,066) |   (494,088) |   (410,052) |   (583,166) |   (633,463) |    (671,708) |   (445,453) |   (7,897,996) | 
| payments at   |               |             |             |             |             |              |             |               | 
| 31 December   |               |             |             |             |             |              |             |               | 
| 2008          |               |             |             |             |             |              |             |               | 
+---------------+---------------+-------------+-------------+-------------+-------------+--------------+-------------+---------------+ 
|               |      198,084  |     66,756  |     58,718  |     69,255  |    130,101  |     184,353  |    184,014  |      891,281  | 

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