I hope Harvey and co from the TEC won't mind me posting details of this one, we've certainly been made welcome in the past and I just regret I haven't been able to attend for long, if at all, over the last couple of years.
Venue is the Billing Aquadrome, just outside Northampton. I think the date coincides with the Bank Holiday weekend, so there's an extra day to either stay over, earn brownie points back home after you've sloped off for the day, etc...
I've certainly got it marked on the calendar. There'll doubtless be a cracking range of Toyotas on display and it'd be good to see a wider range of other OJC's there too.
Been on every year for many years now. It's intended primarily for members of the TEC and they kindly allow other Japanese cars from before 1990 or so, later stuff being well-served by JAE and other events.