You can cancel your contract via any durable medium; e.g. letter, email, text, personal account, or by telephone on 0800 023 4171.
This is to ensure that, should a dispute arise at some point after the contract has been concluded, both parties have a record about what was agreed.
The burden of proof that the relevant information has been provided rests with the trader. In this instance, Liverpool Energy Community Company.
A durable medium allows the consumer to access information directed personally to them, in an unchangeable format for as long as they might reasonably need it.