it was RR who received the initial request from the Russians.
They, RR, were keen to sell but they had to gain approval from the labour government before doing so.
To quote again from 'Not Much Of An Engineer'
With Sir Stafford Cripps, at the Board of Trade, the left wing British Government appeared perfectly happy to sell out latest engine to the Russians, and in September 1946 clinched a deal for 25 Nenes & 30 Derwents, the first few of which the (the visiting Russian)
team took back to the Soviet Union and copied exactly in double quick time.............
On my first visit to China in 1972 I was taken to the Peking Aeronautical Institute where they have a display of aero engines. Right in the fore front was a sectioned Nene engine of which, of course, the Chinese knew I was Chief Engineer. I inspected the engine carefully and said 'Yes, the Russians made a very good copy. They even copied the mistakes!'