I've waded through the archives, but cannot find a clear answer to my connundrum.
I have a 2000 MY 1.8 vvc (an EU2 I believe).
I'm servicing it today and was taken aback at the cost of the spark plugs. It was serviced last year by caterham who used Unipart GSP 9652 plugs. I cannot find a local supplier but an internet search reveals these to be Platinum (long life) and they're about £10 a go.
I see they are about the same price from caterham, but the picture would appear to be that of an NGK plug PFR6N-11 - and this plug is also shown as the right one on 7faqs.
My research would appear to suggest that this was an MGF VVC plug which, because of access was designed to stretch replacement times out to 60 000 miles.
I'm not tight (but equally not rich!). I like replacing the plugs every year (about 3000 miles) but cannot help feeling that replacing the PFR6N-11 every 3000 miles/year is 'throwing money away'
Other threads seem to suggest the NGK BCPR7ES as a better value alternative but I'm not sure this is suitable for a VVC (or the BCPR7ES-11 ????)
Any VVC owners with valid experience, or do I bite the bullet and shell out about £45. Alternatively, I simply leave the plugs in for two years or so and clean them.