You conveniently left out that this ranking shows London top of 28 selected capital cities for a selection of 10 crimes in 2003/04, which we know from the Crime Survey for England and Wales was significantly closer to the UK all time peak.
You'll also note that the paper itself then provides data from additional capitals that it's conveniently not included in the main list. Several of those additional cities ranking above London. In other words, it's a sample that even the paper demonstrates isn't remotely comprehensive.
I don't need to provide any other sources - you're the one that made a claim that was based in "data" that was entirely worthless, and this new data still isn't even close to backing up the original claim.
You'll also note that the paper itself then provides data from additional capitals that it's conveniently not included in the main list. Several of those additional cities ranking above London. In other words, it's a sample that even the paper demonstrates isn't remotely comprehensive.
I don't need to provide any other sources - you're the one that made a claim that was based in "data" that was entirely worthless, and this new data still isn't even close to backing up the original claim.