In reply to markjackson149:
As per Kev's comment. Baggy is all trad. It's good crag with lots of nice, lower grade climbs. But it is ultimately a traditional sea cliff environment with abseil approach. Make sure you know how to Prusik, how to build belays and so on.
Regarding grades... I suspect you mean 'E4 6a' for example. This isn't 'both grades', the 6a part has absolutely no link whatsoever with the system used to grade a '6a' on Portland (French). The different grading systems are explained briefly here. https://www.rockfax.com/publications/grades/
Hope this helps .