Several of us like the HoS Marshall Library set, check them out. One is red...
Pieces

I'll take a look thanks.
Are the pieces nicely weighted?
What does the king weigh please?
These pieces (the Marshall Library set) have a King weight of 0.8 oz (22 g).

Thanks @Rsava.
I quite like the Pegasus pieces but it's nice to have a change.
Is the Marshall set nice to play with. Heavier than the Pegasus set?

The Marshall King is slightly heavier
Marshall 0.8 oz (22g)
Pegasus 0.6 oz (17g)
Since I dislike the original Pegasus set, it is the set I use now pretty much exclusively. I have modified several sets to use including a couple of wooden ones. I have pictures posted here of them.
Marshall Kings are just slightly taller. The Queens slightly shorter. Other pieces all about the same. In addition the bases are slightly larger. I posted pics in this group of the White/Red set on the board. I found I needed to modify them slightly, very easy to do. @HHD3 did not need to modify his. Here is a comparison of the height of the Kings:

Not sure, I started using mine and the third game I used with them the board did not register all the moves. I had to stop and go back to the online board.
I modified them and have played about 10 games since - have not had any issues. Since I will only be using this set with this board I didn't really have problem with doing it.
Any recommendations for some nice weighted plastic chess pieces that will work with the Pegasus please? Black and white but I'm open to other colours. I'm in the UK.
Cheers