Widely varying estimates for replacing central heating programmer

[spanglethoughts]

Hi, we live in an old cottage and we're slowly doing it up. We're close to Cambridge. Have got several estimates for replacing an ancient CH programmer which vary from £100 to £175. Anyone got any idea what would be reasonable? I'm tempted to go with the £135 as it's an electrician we've used before.
Thanks for any thoughts!

We have a Hive. Cost more than your quotes but it’s great. Can be controlled from an app.

Thanks Bubblesbuddy, that's a coincidence, someone else mentioned that to me today. Will definitely look into it.

Go with a tradesman you know who has done good work for you.