Standard copyright legislation applies.
It's fine saying that "standard copyright legislation applies, but you can't be prosecuted under this. You must be prosecuted in accordance with a specific section of specific legislation.
The "copyright, designs and patents act" states that the following practices are offences:
16 The acts restricted by copyright in a work..
(1)The owner of the copyright in a work has, in accordance with the following provisions of this Chapter, the exclusive right to do the following acts in the United Kingdom—.
(a)to copy the work (see section 17);.
(b)to issue copies of the work to the public (see section 18);.
[F1(ba)to rent or lend the work to the public (see section 18A);].
(c)to perform, show or play the work in public (see section 19);.
[F2(d)to communicate the work to the public (see section 20);].
(e)to make an adaptation of the work or do any of the above in relation to an adaptation (see section 21);.
and those acts are referred to in this Part as the “acts restricted by the copyright”.
In fact, reading that legislation more, it does appear that provided the viewing is for personal and private use, no offence is committed:
22 Secondary infringement: importing infringing copy..
The copyright in a work is infringed by a person who, without the licence of the copyright owner, imports into the United Kingdom, otherwise than for his private and domestic use, an article which is, and which he knows or has reason to believe is, an infringing copy of the work
.
Copyright, Designs and Patents Act 1988