Horsham Developments aren't too far from you, they're in Chieveley and if I lived closer that's where I'd send my car for most bits.
This is their website price list for servicing:
P1 Service – prices from £99.99
Includes engine oil filter and oil change. All Nissan P1 checks and procedures.
Free alignment check
P2 & P3 Service – prices from £229.99
Includes P1 service items plus new air filter, brake fluid change
Free alignment check
(2007+ 350Z and 370Z have two air filters which brings the service cost to £259.99)
Service Intervals
P1 - 9000, 27000, 45000, 63000, 81000 miles
P2 & P3 - 18000, 36000, 54000, 72000, 90000 miles
Nissan also recommend the following:
Spark plug change after 5 years or 54,000 miles - additional cost of £99.99 (for 2003-2006 350Z) or £184.99 (for 2007+ 350Z and 370Z) on P1, P2 or P3 service
Coolant change every 3 years or 36,000 miles - additional cost of £84.99 on P1, P2 or P3 service
Nissan don't recommend replacing gearbox or diff oil in their service schedule, however we'd recommend changing the oils every 3 years / 36000 miles. If this is required costs are:
Gearbox and diff oil change - additional cost of £89.99 on P1, P2 or P3 service
Wheel alignment check is free, if adjustment is required we charge £99.99 inc VAT.
We use fully synthetic oils and high temperature brake fluid - if you have any specific requirements, please let us know so we can accommodate your needs.
All prices include VAT at the current rate.