Hi,
The easiest way is to use
https://spectrocoin.com/en/signup.html?referralId=2508987656You can link your debit/credit card and deposit GBP, USD, EUR.
I think that you are not chatged any fees since it apears as a POS buy.
Then convert it to BTC using their exhange at current rates.
You can also get a cash card from them to use it for purchases/payments using bitcoins.