Copyright issues seem to be popping up quite regularly, especially lately.
Not exactly sure where this is from but it seems quite clear.
"Prior to 1 August 1989, the copyright in photographs, portraits and engravings (and only those types of work) which were created as a result of a commission were owned by the commissioner and NOT the creator"
If someone, way back when, asked for a photo be taken, and paid for it, they were commissioning it, and were therefore the copyright owner.
Following that, this can be found on ipo-gov.
Do I need to register copyright?
No - copyright protection in the UK is automatic, so there is no registration
system, there are no forms to fill in, and no fees to pay.
Can copyright be transferred to someone else?
Yes - copyright is a form of intellectual property and, like physical property,
it can be bought and sold, inherited or otherwise transferred. It is also
possible to transfer only some of the rights you are entitled to. Anyone who
is a copyright owner can choose to license others to use their work
Those words I expect are copyright of HMGov. I borrowed to illustrate only.