Google Sheets - how to consolidate multiple (constantly updating) sheets into one

Question

I have a Google Sheets workbook with ~20 sheets. I want to create a new first sheet as a 'Master' which is a consolidation of the other 20. The sheets are all for different people and contain their name, qualification and date achieved.

For example if I had the following 2 sheets:

Name|Qualification|Date

Bob |First Aid |01/01/2019

Bob |Safety |10/01/2019

Name|Qualification|Date

Tim |First Aid |01/01/2019

Tim |Fire Hazard |15/01/2019

The Master sheet would look like:

Name|Qualification|Date

Bob |First Aid |01/01/2019

Bob |Safety |10/01/2019

Tim |First Aid |01/01/2019

Tim |Fire Hazard |15/01/2019

This is easy enough to do by just referencing the cell or using =importrange, however the sheets will be added to and I want the master to update automatically.

I believe =importrange might work, but it wont allow me to reference an entire column (i.e. A2:A)

Does anyone know of a good solution? The only thing I can think of is to add some blank rows at the end of each individual sheet that can be updated to, but this won't be good enough long term