tax cost?

hi guys sorry if thas has been asked a million times already but i was going to pick my landie up sunday and now have the chance to get it today, i was needing to know how much the tax for 6 months will cost me its a defender 90 pick up 300tdi on a p reg
thanks folks

Car first registered before 1 March 2001

For cars first registered before 1 March 2001 car tax is based on engine size as official CO2 data is not available.
Engine 1549cc or smaller – 2011/12 rate = £130 per year (£125 in 2010/11)
Engine bigger than 1549cc – 2011/12 rate = £215 per year ( £205 in 2010/11)

for 6 months half it and add on about £15