@Persona non grata
"So, like to admit you got that wrong then?"
The Swedish courts have a warrant for his arrest. (which has just been upheld)
Interpol has a warrant for his arrest.
The UK courts agree that there is sufficient grounds to extradite him to Sweden.
I would imagine they also have a warrant for his arrest out given he skipped bail.
Ergo, he is going to be arrested and held as soon as he leaves the embassy, for bail-jumping at least even if the Swedish charges were to magically melt away. Questioning him in the embassy accomplishes the square root of fuck all for the Swedish prosecutors, so why would they bother? It would be bad precedent to pander to a fugitive in this way.