6. Share based payments (continued) The exercise price range and weighted average remaining contractual life for the options are as follows: For the year to 31 March UK Schemes South African Schemes 2007
2006^
 2007 2006^ Exercise price range
£0 - £3.47
£1.55-£4.99
R0-R57.60
R25.00-R54.41
 Weighted average remaining contractual life
3.13 years
7.4 years
3.13 years
5.9 years
 The fair values of options granted were calculated using a Black-Scholes option pricing model. For options granted during the year, the inputs into the model were as follows: - Share price at date of grant
£4.98-£6.11
£3.41-£4.99
R64-R81
R33.46-R25.04
 - Exercise price
£0, £4.98-£6.11         £1.55-£4.30
R nil
R33.4-R54.41
 - Expected volatility
39%
28% -30%
35%-39%
28% -30%
 - Option life
5-5.25 Years
5 years
5 Years
5-5.75 years
 - Expected dividend yields
3.52%-4.03%
3.15%-4.27%
3.94%-4%
3.36%-4.67%
 - Risk-free rate
3.98%-5.10%
4.23%-4.69%
8.82%-8.94%
6.74%-7.78%
 Expected volatility was determined based on historical volatility of the respective share price over 6 months. The expected attrition rates used were determined based on historical group data, with an adjustment to actual attrition on final vesting. ^ Restated for the share subdivision of 5 shares for 1 that took place on 4 September 2006. 7. Taxation For the year to 31 March 2007 2006 £’000 Current tax UK - current tax on income for the year
20 983
20 124
- adjustments in respect of prior years
(3 161)
6 286
- corporation tax before double tax relief
17 822
26 410
- double tax relief
(1 397)
(3 710)
16 425
22 700
Southern Africa
65 303
80 144
Europe
7 658
4 096
Australia
9 328
5 804
Other
5 716
1 427
88 005
91 471
Secondary taxation on companies*
7 318
689
Total current tax
111 748
114 860
Deferred tax UK
7 679
(123)
 Southern Africa
318
(2 455)
 Europe
(109)
287
Australia
145
(953)
 Total deferred tax
8 033
(3 244)
 Total tax charge for the year
119 781
111 616
Deferred tax comprises: Origination and reversal of temporary differences
8 475
(3 025)
 Adjustment in respect of prior years
(442)
(219)
8 033
(3 244)
 * Secondary taxation on companies is an additional corporate tax on South African entities on declaration of dividends.