All I can say is Good Luck guys - I'll be amazed if anyone takes you up on your offer !
I don't think you will have a problem, on the pull in Newcastle.
If you act as a stag group its harder, break up into 2 or 3's. You will have more success.
Unless you meet a hen party.
Newcastle is not was its was. To many stag and hen nights.
Try the women for groups section.