Well actually I'm a little more into punk now than I used to be, with the likes of Rise Against and Frank Carter, but yeah, English punk not so much. Not that I think the Jam are going to be categorised by anyone as punk, nor did I suggest that; I just said you can hear the bovver boots of punk in their music - at least on this album - as you can on Iron Maiden's debut and, to an extent, their second album too.
But I think with The Clash it was more the expectation - and the disappointment at its realisation or rather non-realisation - that caused me to give it an E instead of an F. With The Jam, I sort of knew I probably wasn't going to enjoy it that much, and I kind of did enjoy it. A little. More than I expected to anyway.
So then -
The Clash: went in with high expectations, disappointed, so it gets an E.
The Jam: went in with low expectations, didn't hate it so it gets a possible F.