Unless strange men are making the habit of wandering around George and Lynne's house, then the answer to the question of 'Guess Who?' can only be George. If they had some builders or decorators in, it is possible for it to be one of them, but it would be very unprofessional for a reputable builder to walk into his client's bedroom while she is in her underwear and play a flirtatious game with her. That sort of behaviour may work on the spinsters of Wimbledon but not here. You get on with the job and only call up the stairs if you wish to speak to the lady of the house.
In the remaining part of this episode, Lynne mentions two men we have not heard of before; Colin Farrell and Brad Pitt. As this is 1982, these obviously cannot be the current Hollywood actors of the same name as they will have been aged 5 and 18 respectively. That said it may be the same Brad Pitt. Do we know if he went on a school exchange to the London suburbs in the early 80s? If Lynne has fallen for the good looks of an 18 year old American then the marriage is surely in danger. Does the now 54 year old Lynne look back at her time when she could have snared a future movie star with regret or thank her lucky stars she stayed with George for a happy life?
Alternatively, these are local men who just happen to have the same names of movie stars now. Perhaps this is why this episode is so intriguing. What are the chances of those two local men that Lynne finds attractive having the same names as future Hollywood movie stars? It's slim that's for sure. The problem is though that these are real men that Lynne is actually in love with. Why on earth did she marry George if she held a torch for these men? Let's hope it is just a phase and it won't turn into a full blooded affair. However it seems it already has escalated into an affair as Lynne truly was expecting Brad Pitt (from Colliers Wood) to walk into her bedroom. Does he have a key, or is he a reputable painter and decorator?