Conservatory trade associations
It’s going to be important to make sure you choose reputable UK installers of orangeries (https://www.orangerycosts.co.uk) because of the potential cost of building the new orangery. Also because the more reliable the installer, the less likely you are to encounter problems before, during or after construction. This is more important then ever if you are dealing with cheap conservatories prices
With building regulations and planning permissions being a potential minefield (both of which will need to be dealt with for a larger orangery) you need to get a contractor who knows what he or she is doing.
Employ every trick in the book to find out as much as you can about your choice of installer, especially ensure that you get genuine customer feedback from previous customers, especially those who had a ‘less than straightforward experience as those who have been satisfied after they encountered a problem are probably the best persons to talk to about how the company dealt with any issues.