Update....151k miles and had the very hard decision to either scrap or get the clutch and DMF done as the clutch had been slipping in recent weeks. After thinking long and hard, considering she is very reliable and only need to see her through the next 12mnts or so, I decided on the repair. £280 for the clutch, DMF and gearbox oil and found a local garage (who quoted 4.5hrs work)at only £40 per hour plus VAT. So, just over £550 for the whole repair including driveshaft seals and consumables from the garage (Citroen wanted £30 for the driveshaft seals, garage was £15). Wow, a different car!! That clutch must have been slightly slipping for a good while as it's a different car now!!