Right, here goes. After intensive counselling and industrial tranquilisers I've got over the shock enough to attempt a post
The cause of the mess (full marks to kevmond) was a seized water pump. Here's the list of items from the repair estimate. The garage have priced for replacement of all valves as an even-worse-case scenario although they said this would be very unlikely.
Environmental disposal: £3.50
Exhaust valves: £126.40 max
Inlet valves: £97.84 max
Head set: £150.00
Timing belt kit: £106.50
Oil filter: £7.50
Timing belt cover: £44.27
Water pump: £45.00
Crank gear (sensor?): £40.17
Injector studs: £3.04
Timing belt bracket (think it says bracket): £12.00
Labour to date (stripping down and inspection): 2 hours @ £42/hour
Labour for head work: 2 hours @ £42/hour
Labour to rebuild: 6 hours @ £42/hour
Includingthe dreaded VAT comes to £1466.39.
Please don't laugh too loud if this is ridiculous, I'm not sure my current Ford-induced mental state could cope with it.
Fingers crossed that most of the valves survived to at least lessen the pain a little.
Have had to borrow money for this and so the next big decision is which car to sell to fund the repairs and also avoid one of the two insurance renewals due this time of year. Dowe keep the fuel-efficient 2004 C-Max with a largely rebuilt engine but in which I now have no faith or keep my wife's 2002 family-owned from new, FSH, garaged for the first 6 years 1.8 petrol Astra which just about returns 40 MPG if you're really careful? The car-related strife never seems to end
Ramblings end for now, thanks everyone