Hello, New to Bitcoin and what I would like to do is simply pay for a few monthly bills online, Only about £30 a month in total and was thinking of using
the Green address app for my phone. Would this be a safe way to go
Green address is also a good wallet but you could try some reputable web wallets like coinsbase,blockchain and same others said you could try pc wallets for long erm purpose. If you are just starting up to bitcoin world then better go to beginners section for some essential ideas that you would need.