Replace push button or flush unit as well?

[J0no]

Hello all

The chrome push button on the top of my toilet cistern has broken (the thin plastic end bit that connects to cable mechanism has snapped and won't stay in its receiver).

I bought a replacement push button from screwfix this morning but it does not fit with the other end it connects to - (the make I bought is a flomaster)

1) Is it easier replace both the flush mechanism and push button at the same time?
2) Can anyone identify what make I have at the moment from the pics?
3) Can anyone recommend suitable replacement parts -(screwfix or toolstation would be good as they are local to me)
4) Is replacing the flush mechanism and push switch relative straight forward?

Thanks in advance

Link to pic below:


Jono

 

[polesapart]

2 Not a make i recognise but the good folk here may help

FixTheBog
https://www.fixthebog.uk

 

[J0no]

Thank you, I've sent them an email with pics.