This is the reply I got from Lexus Oxford regarding servicing for IS200s
Here are all servicing costings for the is200 to 100.000 miles
( menu pricing ) all prices include vat
10,000 mile service - 152.44
20,000 mile service - 258.65
30,000 mile service - 178.10
40,000 mile service - 347.34
50,000 mile service - 152.46
60,000 mile service - 525.63
70,000 mile service - 152.46
80,000 mile service - 296.48
90,000 mile service - 178.08
100,000 mile service - 462.12