It looks like there is a new player in the UK market. OR one that I’d not previously spotted!
They have a good few shower tray / under shower options and those that can be more centrally integrated into your whole property hot water system.
From http://www.recoupenergysolutions.co.uk/our-range/recoup-retrofit/:
Our most popular waste water heat recovery system due to it’s great efficiencies, low price and superb all round performance. Ideal for new build applications, this product is sure to deliver results, whatever your criteria.
Our tray is the perfect solution for apartments or ground floor en-suites. Achieving code in city apartments without renewables is notoriously difficult; this shower heat recovery system with flexible tray size is the answer that doesn’t cost the earth.
Building a wet room or have access issues? The Recoup Drain+ provides a great option. Finished in stainless steel and offering 50% efficiencies, this is a must have system for your self build or walk-in shower.
This compact WWHRS is easy to install, easy on the pocket and easy to maintain! As it’s name suggests, it’s ideal for retro-fitting in domestic and commercial properties. A very cost effective way to achieve efficiencies of up to 22%.
A system with great efficiencies specifically designed for large developments with good water pressure. This single walled exchanger provides up to 68% efficiency, so will tick a box for the Technical Director or architect looking for a cost effective solution to achieve code.