Not the person you're replying to but my advice would be to first make sure you know what type of skating you're going to be doing, because city skating/freeskating has different needs to fitness skating.

If you're looking at freeskates then you can't really go wrong with FRs, Rollerblade's RB series or maybe some Powerslide skates. Just check how wide your feet are because they can fit very differently, even within the same brand the RB skates are quite wide and Twister Edge skates are narrow.

Ideally try them on and get a feel for what's most comfortable for you, you can swap out the frames and wheels for something better later on, and usually the liner too.

Hyde Park, Battersea Park, join the easy Sunday Stroll at 14:00 every week, no idea about skates, but make sure they're comfortable!

My experience was quads are way, way easier to learn and skate on than inline. Give them a try too maybe.