In reply to alex123c:
Portland is a non-starter for trad. You have two options, neither are perfect for different reasons:
Dartmoor has many short outcrop trad. routes on generally solid rock that can have decent protection and good belays, so ideal for your purpose. Unfortunately the crags are roughly a two hour drive from Portland:
https://www.ukclimbing.com/logbook/crags/haytor-205/zig_zag-32592
Your other option is to seek out the occasional suitable route at Swanage. To get to the start of routes you will probably have to abseil. In some places it is possible to make easy but exposed scrambles down, with high consequences if you loose your footing. At Swanage the base of routes are usually close to the water and some sea states (tide, waves) will make belaying and climbing hazardous. It is hard to advise on the suitability of these routes as we don't know how you or your partner feel about this kind of thing.
Seacombe is accessed by a short abseil or an easy scramble down, many people would be OK with the scramble but we don't know if you would.
https://www.ukclimbing.com/logbook/crags/seacombe-1240/far_from_the_madding...
Cattle Troughs, has an exposed scramble down or low-angle abseil:
https://www.ukclimbing.com/logbook/crags/cattle_troughs-251/grottle-31451
https://www.ukclimbing.com/logbook/crags/cattle_troughs-251/chockney-14481 and others in the vicinity
https://www.ukclimbing.com/logbook/crags/cattle_troughs-251/fallen_block_cl...
Subluminal, as Dave and Paul, suggest above has a short but steep abseil to access the routes. There are a couple of VDiffs but if you abseil down to the wrong part of the ledge you have to climb a minimum of Severe to get out. The routes will be polished and if your escape route turns out to be wet you could be in for an epic. Chances are there will be others around to point you in the right direction but it's best to not rely on this.