Stone Terrace built in 1913 reigning monarch at the time was George V so is it georgian or does the actual deisgn dictate what style it is?

Depends.
Put a picture up.

its edwardian, my house was built in 1915, its edwardian arts and crafts,
were really luck it still all its original fireplaces, which we use 😛

this is a failry good site for questions:

http://www.bricksandbrass.co.uk

Edwardian.

Agreed. "Georgian" would very roughly be the 18th Century, i.e. before George V.

Period and style don't really mean the same thing so without seeing the house the style could be absolutely anything, and even then there's no clear cut lines between styles.

If you're not up your arse about it, you won't give a shit.

If you are, you'll probably want to refer to it as "Edwardian" 🙂

Deffo Edwardian

Cheers everyone, doesn't really bother me as we both really like the house it was just an out of interest query