Does that make them a little more pleasant? I seem to remember they disintegrate pretty quickly right enough.
Just home and they definitely fit (the Boots ones were marked up as G2 compatible)
A quick read of the packaging shows the Boots (Green and Black packaging, with Green lube strip) are made in Israel, I suspect they may be Personna blades...
The Superdrug (Blue and Yellow packaging, White lube strip) are made in South Korea, I hope they are not, but assume they are, Dorco blades.
Well, not used a cartridge razor for two years, since I discovered you lovely people, and a Merkur 38 (Oh how my bank balance has suffered) but it may be time to give it another go.
Cyril - Jump onto eBay and bag some from these guys: http://www.ebay.co.uk/itm/1-x-Gillette-7-O-Clock-PII-5-Cartridges-pack-/201185004241?pt=US_Shaving_Hair_Removal&hash=item2ed78f8ad1
I've had a PII razor and these blades. They're good!