Anonymity orders can be made but I think it would be unusual, especially for two, and quite short witnesses. The press could report it as a witness who can't be identified, or identified only as X.
In the case of Sophie Lionnet for example, the couple on trial for murder of their nanny, the couple's young child gave evidence of what went on in the house.
It was reported as -
"
A child described yesterday how he thought he heard an “evil babysitter” being drowned in a bath days before her body was found burning in a suburban garden."
and
"Later, a witness described hearing Miss Lionnet “splashing” and “screaming” in the bathroom with the defendants a couple of days before she was found dead. Kouider allegedly told
the witness, who cannot be identified, that she would not let her out of the bath until she “told the truth”. Previously, she had “pushed and slapped” Miss Lionnet, who was afraid that “if she said one word wrong she would get even worse”,
the witness said in a videoed interview."
and
"
A witness, who cannot be named for legal reasons, heard Ms Lionnet screaming from the bathroom with 'lots of splashing of water' and it seeping under the door."
-------------------------------------------
This is the legislation pertaining to anonymity orders;
Coroners and Justice Act 2009
88Conditions for making order
(1)This section applies where an application is made for a witness anonymity order to be made in relation to a witness in criminal proceedings.
(2)The court may make such an order only if it is satisfied that
Conditions A to C below are met.
(3)Condition A is that the proposed order is necessary—
(a)in order to protect the safety of the witness or another person or to prevent any serious damage to property, or
(b)in order to prevent real harm to the public interest (whether affecting the carrying on of any activities in the public interest or the safety of a person involved in carrying on such activities, or otherwise).
(4)Condition B is that, having regard to all the circumstances, the effect of the proposed order would be consistent with the defendant receiving a fair trial.
(5)Condition C is that the importance of the witness's testimony is such that in the interests of justice the witness ought to testify and—
(a)the witness would not testify if the proposed order were not made, or
(b)there would be real harm to the public interest if the witness were to testify without the proposed order being made.
(6)In determining whether the proposed order is necessary for the purpose mentioned in subsection (3)(a), the court must have regard (in particular) to any reasonable fear on the part of the witness—
(a)that the witness or another person would suffer death or injury, or
(b)that there would be serious damage to property,
if the witness were to be identified.
----------------------------------------------
Also there is this part :-
86Witness anonymity orders
(1)In this Chapter a “witness anonymity order” is an order made by a court that requires such specified measures to be taken in relation to a witness in criminal proceedings as the court considers appropriate to ensure that the identity of the witness is not disclosed in or in connection with the proceedings.
(2)The kinds of measures that may be required to be taken in relation to a witness include measures for securing one or more of the following—
(a)that the witness's name and other identifying details may be—
(i)withheld;
(ii)removed from materials disclosed to any party to the proceedings;
(b)that the witness may use a pseudonym;
(c)that the witness is not asked questions of any specified description that might lead to the identification of the witness;
(d)that the witness is screened to any specified extent;
(e)that the witness's voice is subjected to modulation to any specified extent.
(3)Subsection (2) does not affect the generality of subsection (1).
(4)Nothing in this section authorises the court to require—
(a)the witness to be screened to such an extent that the witness cannot be seen by—
(i)the judge or other members of the court (if any), or
(ii)the jury (if there is one);
(b)the witness's voice to be modulated to such an extent that the witness's natural voice cannot be heard by any persons within paragraph (a)(i) or (ii).
(5)In this section “specified” means specified in the witness anonymity order concerned.