Yes, if you have more than 3 months remaining on your existing broadband contract BeFibre offer a contract buy-out option which reimburses early cancellation fees up to £150.
Those who sign up to Be150 will be reimbursed up to £100, Be500 will see reimbursements up to £125, and those who take the faster Be900 plan can get early cancellation fees reimbursed up to £150.