A tank fleet needs a deployment plan

Would 200 to 300 modern tanks be enough for Britain?

The number is meaningless without a clear mission, formation design, basing plan, and a viable way to deploy and sustain them.

The answer rejects a numbers-only argument for a new tank fleet. It asks what formations the vehicles would support, where they would fight, and how they would get there. Air transport is rejected as an extremely slow buildup because one heavy aircraft carries roughly one tank with little ammunition or support. Rail movement to eastern Europe and the permissions needed for those routes turn a procurement headline into a deployment problem.