While the windshield surround I got is ok, I'd only recommend it if cost is the primary concern. The original windshield surround is long out of production but I believe there are close copies that are available, or there used to be. r.d. enterprises used to sell (check with them to see if they still do) a copy that was a bit narrower than the original so they also sell corners to match. I'd also check SJ Sports Cars, Kelvedon Lotus, and Lotus Supplies.
The biggest downside to the Sportwing trim I got is that the windshield had to be glued in like a modern windshield The trim just covers the gap between the windshield and the body. The Europa normally uses butyl tape with the standard surround. I think because the Europa doesn't appear to be setup to use the current glued in setup (only my supposition since I know almost nothing about installing windshields), you're more at the mercy of the skill of installer. The guy who installed my windshield worked for literally the only shop in my area who would touch my car (that included shops that advertised windshield installation for classic cars). He complained the entire time he was working on it and did a mediocre (at best) job. I vowed if I ever needed a new windshield again, I would put it in myself. The butyl tape would have been a lot cleaner and possibly easier.
Obviously, you may not have the same experience with an installer as I did but the point I'm making is that I've read of several people installing windshields themselves by following the manual and using "stock" replacement parts. I think in the end, they probably got a much nicer result. They even likely saved money even though they bought the more expensive surround.
If you're still interested in the something like the Sportwing stuff, you might try searching for plastic car trim or chrome plastic car trim or similar. I'm sure there are suppliers for similar products in the UK.