I think, if Theresa May is so convinced of the involvement of the Russian government, she should lay the evidence out. I'm really sick of British governments keeping secrets from the people that employ them to run the country. Corbyn is right. Let's see the evidence.
I previously poo-pooed the idea of British involvement, put forward by Vitaly Milonov, only to find it repeated by another Russian pundit on the Andrew Marr show. Well, Porton Down is close to Salisbury. But we might be in double bluff territory here - that's a connection that Russia would be quick to promote.
Well, it's likely that the MOD has its own agenda*, and wouldn't wait for government sanction if it wanted to do a little 'tidying up' (perhaps they thought it might help the country by creating a 'hate Russia' diversion).
*The Home Office has also shown a revolting form of autonomy from government guidelines in the Brexit matter, by issuing "pack your bags and fuck off" ultimata to foreign nationals who've lived here for years and have children in British schools, not long after the referendum result, so perhaps this is not beyond the bounds of possibility.
Not QUANGOS but QUAGOS.