Ferioli is possibly the worst boiler brand on the market. If yours is still working that's great.
I'd suggest that you start by having a Programmable Room Thermostat fitted, and TRVs on any radiators that don't currently have one that works. Usually setting "3" is about right. If working, you will find that each will turn off once that room is up to temperature, and turn back on if it cools a bit.
That will improve comfort and/or economy.
It's unusual for pipes to need changing unless they are certain types of plastic or plated steel, or were installed so badly that they leak.
If cost is not a concern, by all means change to one of the top three boiler brands, and have a Powerflush (I am assuming your heating system is old and neglected) and a system filter at the same time or sooner if you have radiators that are cold in the middle or at the bottom. If you do need your pipework improved, this is the time to do it. Have a look on the manufacturer's website for their approved installers in your area. We are now approaching winter, so any decent gasmen will be very busy mending and replacing systems that were neglected until cold weather arrives.
Ask around for personal recommendations as well as looking at the manufacturers' websites. I would advise against advertising websites where the traders pay to be listed and can censor unfavourable reviews, even if the site name suggests it is a recommendations site.
An experienced independent local installer with a good reputation is more likely to do the work himself. Some larger firms employ a proportion of unqualified people whose work needs to be signed off by someone else.
In summer you will find it easier to make appointments and may see better prices. Also it won't matter if your heating is out of order for a week or so while being renewed.
I'm not keen on wireless controls because they are more likely to go wrong.