is there any easy way that is going to look good to repair or rectify
With cosmetic bodywork rectification, there are easy ways, and there are ways to make it look good, but there is generally no method for achieving both at the same time.
I've never had any great success with repairing peeling vinyl trim; much the same thing happened after about seven years on my Ka (the first one, not the one made by Fiat) and in the end, I just used a solvent to remove the whole thing, and polished up the underlying paintwork; it looked OK rather then pristine, but good enough for a car of its age.
From your pictures, if you remove these, I'd say you're either going to have to replace them with something, or do some painting.
You can buy OEM trims from shop4parts at a discount, but they're still not particularly cheap.
In your situation, I'd be thinking about wrapping; perhaps with something like
this? Alternatively, just buy a roll of black satin wrap and make your own.
@
typecastboy, you must have had to deal with damaged vinyl trims on some of your cars - what would you do here?