Hi Madaba. I think you will find a proper venue via this search form with wedding reception venues in London area. I think "wedding" venues also might be ok for such party. On this website wedding venues are also places ready for birthdays, conferences and so on;) First: mark which part of London are you intrested in Second: Select Capacities - 76?150 Third: mark Additional Criteria if required. And then click Search. Hope i helped;) take care and good luck!