The best interpretation is one where William Blake, who wrote the poem, is actually saying how totally crap England (well he should really have said Britain but under the circumstances we'll accept England) was with its "dark satanic mills" and all the other trappings of the Industrial Revolution. What Blake is asking is how much better the country might have been if Jesus had actually paid a visit? - which one myth claims he did do.
Then in the latter stages of the poem Blake resolves to jump into his Chariot of Fire and sort England out himself. Clearly the Chariot of Fire must have had a mechanical problem during the current World Cup. Also, it's therefore a bit unforunate that the film Chariots of Fire should be about a Scottish athlete Eric Liddell. Probably the best thing about the poem is that it gave a composer called Hubert Parry the excuse to write the tune. It's actually not fair. England get all the best tunes but tag the most awful words on to them - Land of Hope and Glory is another case in point whilst all we get is an Anglophobic dirge by a beardie in an Arran jumper.
William Blake was a member of what you might call the Nutcase School of English poetry. Another member was Samuel Taylor Coleridge who was a complete dopehead.
In fact one day Coleridge was composing a poem called Kubla Khan whilst out of his face on some kind of concoction. There came a knock at the door and he spent some time speaking to a man from a place called Porlock. When he got back to his seat, the trip was wearing off and he couldn't remember any of the psychedelic nonsense that had been going on in his head previously. Hence (mercifully!) Kubla Khan is very short since it really is a load of meaingless rubbish so we have good reason to be grateful to the individual now known as The Man From Porlock. On the other hand Coleridge did manage to complete the almost equally barking Rime of the Ancient Mariner.
There is also a connection between English poetry and ICT since Terry Butcher's English residence is in a village called Stoke Poges in Buckinghamshire. It was there that a poet called William Gray wrote what is known as the Elegy Written In A Country Churchyard - or Gray's Elegy - and Gray is also buried there. That's the one that begins "The curfew tolls the knell of parting day."
Sometimes these school holidays get a bit quiet...... :D
Charles - you are supposed to be on your hols so you really should get out more!