When you posted your query, I did not even notice the lack of H! Very well done for finding one of those. How long have you had it? £6 is a stunning bargain.
As to grading - I am not probably the best person to quote as I tend to be old-fashioned and grade harsher than most modern dealers. For example, I would not agree with the London Coins grading of the other example. I would give that only F on the obverse and a nVF on the reverse.
On that basis, yours would grade aF or F both sides, with the scratches noted as details. But what the heck, I would forgive any grade to have an example in my collection! I prefer to grade on Rob's basis - "Acceptable" or "Not Acceptable".