DoctorCopper - I'm seeing something totally different for the same flights:
Changes: Time/date changes permitted at any time before each flight departure for a change fee of £60 or an upgrade fee of £60 plus any difference in fare. Free changes on the day of departure provided changes are for same date/cabin/route/airport. Changes subject to availability. Fees apply per ticket.
So don't understand the situation at all.
P.S. I'm the friend frb98mf is trying to help!