Lots of good points here. PCP with a company isn't even sensible these days, my accountant has advised that if I want to get my mrs a company car to run around in then its better pay her a dividend and buy it outright, then charge company 40p/mile for business use or buy outright via the company on something with less the 100m/g co2 so as not to affect her tax with a BIC charge, but then depreciation hits.....
For me I always buy, usually something around 3 years old with low mileage. For the first time in 11 years I have no finance on anything (other than the mortgage) and its great. If I run out of work I have £7-8k sat in the zed that can be moved on, hopefully that'll not happen though!