20-08-2017 11:09 AM - edited 20-08-2017 11:10 AM
Yes you can end your contract early.
It would be Monthly Tariff X Months Reamaining MINUS VAT. (As you are not subject to VAT on cancelling early)
20-08-2017 11:16 AM
To add to @BrendonH comments.
For the exact figure you would need to speak to CS on 150. You would also need to call them to give 30 days notice.