The problems with the Tigers at Cambridge is that they are very busy all the time and that the wind only has to be a few Kts above 0 and they are out of limits.
I know, I tried twice.
The Cubs at Clacton are definately your best bet. They are fully geared up for training and the field is grass and no hassles.
However there is also a C152 tailwheeler at Elmsett which is in Wattisham zone. Horizon flying club I think it is...........
I did my refresher training at Redhill (Cubair) and they were great.
Hope this helps
Arc