asked the Secretary of State for Defence (1) if any Royal Navy vessel has been in collision with a Russian vessel in the last 12 months; and if he will make a statement;(2) on how many occasions in the last 12 months Royal Navy submarines have been involved in collisions with other seagoing vessels.

No such collisions have occurred.

asked the Secretary of State for Defence (1) how extensive was the damage to the stern of a Royal Navy nuclear-powered submarine, recently involved in a collision and repaired in Portsmouth;(2) which nuclear-powered submarines have undergone repairs in Portsmouth in the last 12 months, and on what dates.

No Royal Navy nuclear-powered submarines have been repaired at Portsmouth in the last 12 months.