- "This level of derangement, I'm impressed."
- ― Trevor Philips about Nigel.
Nigel is a British tourist in Los Santos who, along with his friend Mrs. Thornhill, is obsessed with Vinewood celebrities and spends his time in Los Santos stalking several of them and stealing some of their possessions to add to Mrs. Thornhill's collection. He is also the giver of the missions Vinewood Souvenirs which are side missions done by Trevor Philips.
Nigel and Mrs. Thornhill request that Trevor steal various celebrity souvenirs for them, including the collar from Kerry McIntosh's dog, Willie from Love Fist's golden tooth, Mark Fostenburg's golf club and Tyler Dixon's swim trunks. Over the course of these missions, Trevor assaults the various celebrities to obtain the requested items and even goes as far as to kill Mark Fostenburg.
After retrieving the items, Trevor meets up once more with Nigel and Mrs. Thornhill to deliver the souvenirs. During the meeting, the couple spot their favourite action star, Al Di Napoli, and ask Trevor to help them get him to a "private interview" they'd set-up in an abandoned garage they own. Trevor takes Nigel and Mrs. Thornhill on a high speed chase after Di Napoli, who ultimately crashes his car and gets kidnapped by the elderly stalkers.
After keeping him captive for a few days, Nigel and Mrs. Thornhill decide they can't keep Al locked up any more, since he refuses to eat and they fear he'll starve. The elderly britons ask Trevor what they can do and he suggests to either release him somewhere in the countryside where they can get away before he can contact anyone or "sending him on a trip he can't come back from". Since they are, as Nigel himself puts it, "not very good with goodbyes", the britons ask Trevor to take care of Al and then send him away, completely oblivious to what Trevor actually meant.
The player then gets to choose whether they kill Al by parking the car he's stuck in on the train tracks or they drive out to the countryside and let him go. Trevor can even blow up the car before entering it and kill Nigel and Mrs. Thornhill. Either way, Nigel and Mrs. Thornhill make no further appearances in the game and it is clear that they were able to get away with the kidnapping and that they will continue to harass Vinewood celebrities, if Trevor didn't kill them.
- Nigel and Mrs. Thornhill (Boss)
- Vinewood Souvenirs - Kerry (Voice/Boss)
- Vinewood Souvenirs - Willie (Voice/Boss)
- Vinewood Souvenirs - Tyler (Voice/Boss)
- Vinewood Souvenirs - Mark (Voice/Boss)
- Vinewood Souvenirs - Al Di Napoli (Boss)
- Vinewood Souvenirs - The Last Act (Boss)
- Among some of the souvenirs that Nigel and Mrs. Thornhill got from the celebrities, there is a diaper from one of the sons of Samantha Muldoon and a pregnancy test from Jill Von Crastenburg.
- During Vinewood Souvenirs - Al Di Napoli, if the player drives on the left-hand side of the freeway, Nigel will comment on Trevor "driving on the proper side of the road", a reference to the fact that vehicles drive on the left-hand side of the road in Britain.
- Nigel's name could be a reference to Nigel Thornberry from The Wild Thornberrys animated series. The name "Mrs Thornhill" also supports this.