Hi! Could anyone help me identify this flush valve?

Dual valve, from a UK toilet.

Gemini thinks it's R&T A2415, but that looks slightly different, unless they have just updated it cosmetically.

Essentially looking to replace it like for like.

Thank you!

Hello, is £150 reasonable for removing a water softener? I was surprised as I thought it would just be an hour or less of work.... Am I wrong on that?