Welcome to the MetaMask Community @richutchings!! 
Make sure you’re sending to an address on the Ethereum Mainnet.
If you’ve previously created a MetaMask wallet, you can restore it by entering your seed phrase. You’ll then be prompted to create a password. You’ll only need your password to unlock (sign into) your MetaMask wallet.
You can find a list of our official support platforms here: Official MetaMask Support Platforms - #5