What is the best way to remove black mould from the rubber inside the washing machine please?

This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.

Black mould on washing machine door seal

The problem

Black mould was reported on the rubber seal inside the washing machine. The user asked for the best effective way to remove it.

Likely cause

The accepted reply said it is unlikely to be removable unless the mould infection is very light.

What fixed it

No clear cleaning or repair method was confirmed in the discussion. The strongest supported advice was that black mould on the seal often cannot be removed if it is established, apart from possibly very light surface mould. The exact remedy was not confirmed.

Checks to try

• Black mould was observed on the rubber door seal