Hi, just picking your note up on the Warranty Direct cover. I looked into this as my IS is just out of manufacturers warranty. The things out of scope are the usual - bulbs (expensive if HID too), pads / disks (serviceable items) etc. They offer several level of cover with the luxury care plus being the top one.
For higher mileage cars / older cars they appear to only offer lower levels of cover (Extra care for cars <70K; secure care and major care for cars > 70K). They also only offer to pay a % of the parts cost for specific mileage bands. For instance, >100K they pay 50% towards the cost of parts.
I got warranty direct to give me a quote on the maximum cover (luxury care plus) which on the face of it is comparable to Lexus warranty. They confirmed they would normally only offer this on cars <60K and under 4 years old. They quoted me about £580 iirc which is just shy of what Lexus charge (plus full RAC cover included by Lexus) so I am thinking of going with the latter it may give me a bit more negotiation with repairs etc, although feedback on this site on warranty direct appears to be positive (although not sure what policies level people took out).