Sorry, but your husband is being EXTREMELY unreasonable, getting a Ford Focus RS as a company car.
This has a CO2 value of 175g/km, which as of April will mean 32% of the value as tax, and subsequently 34%.
So on a 2 year lease you are going to be taxed on 2/3 of the value of the car (including options), i.e. AT LEAST £20,000, based on a £30,000 list price.
This results in an £8,000 tax bill @ 40% tax.
Let's say this car costs the company £400 a month = £9,600 over 2 years. As a cash allowance, I assume he would get less, maybe £8,000, which is £4,640 after tax.
So this car is costing probably around £12,640 (£8000 tax PLUS the lost income) over 2 years, which is £527/month, which is TOO MUCH to pay for this type of a car.
If he doesn't have a cash alternative, then he MUST choose a low CO2 car.
For comparison, a Ford Focus Titanium X (top spec) 1.0 Ecoboost would result in a tax liability of only £3,000 over 2 years.
So it's costing an extra £5,000 of TAXED income (£8,620 before tax) to drive this toy, over the same model of car without the boy racer engine.
For a company car it makes no sense to go for performance petrol engines, you need either very small petrol engines, hybrid (the Prius+ is a 7-seat petrol hybrid), or diesel engines.
If he wants something vaguely sporty it would need to be something like a BMW 320d.