Thanks for the
help! Quite a
bit older (901 AD) than I expected, I know coins like this were minted over many centuries and I guessed mine would be around the 13th-14th century.
Unfortunately I can't read a word of Arabic so not much chance of me working out the
mint myself - I've more or less got the hang of reading the
Greek alphabet and may eventually manage others like Hebrew and
Nabataean, but the way the letters flow together in Arabic makes it very hard to decipher if you're used to separate characters!
I'm not 100% certain that this coin was found in the UK, it was in a lot of other detector-found mediaeval coins which were definitely British finds, but the seller could well have added some unwanted coins from
his own
collection! But these coins, and their gold equivalent the dinar, circulated very widely as trade coins around this date, so much that some European kingdoms actually made their own imitations to use in trade, so it's certainly a possibility. There are numerous mediaeval European coins that turn up regularly in
Britain, such as Venetian soldi.