Nick I think it's safe to say you are banned from going anywhere near London in June or July
https://www.dailymail.co.uk/news/article-10356715/Royal-Navy-prepares-dismantle-masts-sunken-World-War-II-wreck.html
It's actually just off Sheerness, been a legend for years with those of us that lived near wondering if it was worth detonating it so they could rebuild Sheerness starting with a clean sheet
I read a study a few years back that said it should probably be safe now as the fuses would have rotted away.
The British Army used to explode "old bombs" here at sea (Latchi) ...
They dispose of munitions at Akrotiri too...
I remember one year they set off a load and because of the cloud formations the sound bounced back to Limassol and they thought they were being attacked!