Replacing Old Crane CH Control With Digital Control?

[DaveH886]

Hi,
Having replaced all the radiators in current system I would like to update the control (as seen in image) with a modern digital one. Would this be a simple job and what type of control would I need?
I'm not a complete novice when it comes to electrics but then I'm no electrician either.
All help gratefully received.
https://i.*********/TzAO3NF.jpg

 

[ShaunCorbs]

Shouldn't be too hard depending on what's behind

Drayton lifestyle is a decent prog

 

[doitmyself]

The "Crane" timer allows hot water on its own (options 1 - 3) but not heating on its own - HW has to be on at the same time (options 4 - 6).

This says that the system is a "pumped heating, gravity hot water" one. So any programmer you purchase must have a "gravity" option.

This type of system is no longer permitted, but upgrading to a "fully pumped" system is not compulsory. However you should consider it as it will save money in the long run.