Go to competitor takeaway.com they do support bitcoin.
Wasn't aware of this, thanks! I will be ordering via takeaway.com from now on, and asking my favourite restaurants to join.
I sent a reply to the people at just-eat:
Thanks for your response. I'm just letting you know, I have discovered that takeaway.com is already supporting Bitcoin as a payment option. I will therefore be placing my orders through them whenever possible. Hope to see you add Bitcoin support to your service soon, I have been very happy when ordering via just-eat!