Repairing a pipe

[MercuryT]

Hi FF.
As part of big clean up yesterday (which made me go a bit mental) when moving dishwasher I bent the metal pipe accidentally and water everywhere.

I turned off the main so it's stopped as nowhere else seemed to work but does anyone know what best way to fix?

Sure could get a plumber but I think I can do.it with right products as only very small split.

I'm guessing a Selleys product of some sort?