I had a scout round then settled on some NGK PFR6N-11 Laser Platinum Premium plugs I'd managed to source on eBay for £25. Which seemed a good price, Halfords were selling their own brand for about the same.
I'd assumed they hadn't been changed before, however, after removing the first one it was obvious they had been as they were identical to the ones I'd purchased.
The tips of the old ones looked to be in good condition, good sign the engine was running ok, so all in all quite pleased.
Old plug
New Plugs
