Russian Ambassador to the UK Andrei Kelin (Photo: Aaron Chown/PA Images/Getty Images)

Russia has submitted evidence to the UK ambassador on London's involvement in the Ukrainian attack on Russian ships in Sevastopol, Russian Ambassador to the UK Andrei Kelin said on Thursday.

"We perfectly know about the participation of British specialists in training, preparation, and execution of violence against the Russian infrastructure and the Russian fleet in the Black Sea. And we know that it has been done. As I said we do have detailed things [evidence] which have been delivered," Kelin told Sky News.

Earlier on Thursday, the Russian Foreign Ministry Spokesperson, Maria Zakharova, said: "The British ambassador will be summoned and given the relevant materials," and Russia will submit evidence of Britain's involvement in the attack on the Black Sea Fleet base in Sevastopol and the act of sabotage against the Nord Stream pipelines to Deborah Bronnert, the British Ambassador to Moscow, and will then make the basic information public.

Moscow will make the evidence public in the coming days, the ambassador said, adding, "It will become public pretty soon. I guess perhaps today, perhaps tomorrow."

On October 29, the Russian Defense Ministry said that Ukraine carried out a drone attack targeting military and civilian ships in the Bay of Sevastopol in Crimea, saying that preparations for the attacks were done under UK specialists' guidance.

The attack led Russia to suspend its engagement in the grain deal while the UN urged for the deal to remain in effect.

Russia then demanded "commitments" from Ukraine not to use the grain exports corridor for military purposes, and after Putin obtained these guarantees from Ukraine, he announced that he instructed the Ministry of Defense to resume the grain deal operations.

Yet, Russia remains cautious to withdraw its commitments if Kiev breaches the guarantees it provided earlier in the day about the non-use of the grain corridors for military purposes.

The deal, brokered in July by Turkey and the UN, was made to ease up the global food crisis.