My original intention was to go to Gaydon Heritage Motor centre - CV35 0BJ - thats open 10.00 am to 5.00 pm.
I see that there is a gathering at the Stratford Armouries Museum which may be more interesting - stratford on avon CV37 0JA - thats 11.00am to 3.00pm. I suppose you could do the both i.e. morning at one and afternoon at the other