Thank you for your kind replies. My mother is Ms Thomson, of Rckmansworth as per booking. I had only been to Luton Hoo for afternoon tea, but would say it is one of the best places for an event I have ever been. They have a lovely oval room with views to the lake the food was wonderful, the staff so helpful and with real attention to detail. For info your smaller coach was able to get out of the main gate which is much nicer than the trip round the housing estate at the back (Luton Hoo had obviously thought it wd be bigger). Would highly recommend it.
Thanks again Fiona