A man who police fear may have used an “aphrodisiac” to drug two men before sexually assaulting them has told a court that everything he did was consensual.

Luiz Da Silva Neto, 35, of Wandsworth, denies trawling bars to “pick up a drunken and vulnerable person” or that he drugged anyone, as the prosecution has alleged.

Da Silva Neto told Oxford Crown Court that all of his close contact with his alleged victims was consensual.

He denies drugging two men, who cannot be named for legal reasons, potentially with GHB or GBL and sexually assaulting them in November and December 2021.

He is accused of two counts of administering a substance with intent, two counts of causing a person to engage in sexual activity without consent and one count of kidnapping, rape and committing an offence with intent to commit a sexual offence.

The jury has heard the first alleged assault took place at a house in Middle Barton, Oxfordshire.

The first man had gone there to carry out some work and the pair had shots of Jagermeister before the alleged victim began to feel tired.

He went to sleep fully clothed before waking up naked.

Under cross-examination Da Silva Neto told the court “he was consenting” and “awake” when the pair had intimate contact.

Prosecutor Matthew Walsh said: “Do you accept that you and he both cannot be telling the truth? One of you must be lying.”

Da Silva Neto replied: “Yes.”

Mr Walsh said: “If a person drugs another person causing them to pass out, the person who passed out cannot be consenting to what takes place?”

He added “it would be obvious” to the person who did the drugging that the other person was not consenting.

Mr Walsh told Da Silva Neto that the prosecution’s case is that he drugged the alleged victim.

Da Silva Neto replied “that is not the truth, not at all” and added “I have never, ever given anyone any drugs.”

When leaving the property, the alleged victim noticed what he described as a syringe on the side of the kitchen and became convinced he had been drugged, the court has previously heard.

Mr Walsh has previously described the drug as an “aphrodisiac” which has “euphoric and hallucinogenic effects”.

The second alleged victim was a married man who was on a night out with work colleagues in central London hotspot Raffles before he was allegedly assaulted at a property in Oxfordshire, the court has heard.

The man previously told the hearing he has vague memories of events that night.

They include feeling “strange” when he spoke to the doorman at the club, having a cup with a “dark brown liquid” being held to his lips at some point and waking naked in a strange room.

Da Silva Neto said he was “high” and looking for drugs that night but the married man did not seem intoxicated when they met.

Mr Walsh noted that Da Silva Neto had been filming at the toilets of local pubs.

He told him: “You were looking to start a conversation, to find somebody who might be drunk and someone you might be able to take advantage of.”

Mr Walsh added “that’s why you were filming, it was all about your sexual gratification”.

Da Silva Neto said he “disagreed” with that and he knew it was wrong but it happened because he was high.

Da Silva Neto flatly denied spiking the married man’s drink.

He said: “I cannot say he is lying because I do not know the guy. I do not know if he was being himself that night.”

Da Silva Neto added: “It seems to me that he was a guy outside a nightclub. He was looking for some fun and a night out.

“I invited him, not thinking that he would come with me.

“It is not something I would have done if I was not high to be honest.

“I cannot say if he was spiked in the club or not.

“Having met him for the first time, I cannot say he was not acting in his normal self.”