Siltfree

Wessex Manufacturing Ltd

£9.99

Siltfree is used to treat central heating systems suffering from blockages, it will pick up silt deposits and holds them in suspension, freeing up the system until it can be safely flushed through. Siltfree picks up silt deposits and holds them in suspension preventing them from causing blockages and allowing for easy flushing of the system or area. Most commonly used in central heating systems, Siltfree works by creating a positive charge on the silt particles which prevents them from sticking back together. This means that silt and debris will continue to float around the system without bloc

Wessex Manufacturing Ltd's own words, read from their page.

Buy from Wessex Manufacturing LtdPrice seen 2026-09-07. Affiliate link.

Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.

UK company
Registered at Companies House as WESSEX CHEMICAL FACTORS LIMITED, number 02992480. Checked 2026-09-06.
Means the business is a British legal entity, not a British-sounding name owned elsewhere. It says nothing about where anything is made.
UK operations
Not yet checked.
Means people employed here, or premises they actually work from. We keep this separate from the company badge because a registered office can be an accountant's spare room, and a company can be registered in Britain while everything it does happens somewhere else. Where we have not looked, we say so rather than assuming.
British-owned
Not established. Many companies file a statement rather than naming a controlling shareholder.
Read from the register of people with significant control, following the chain of holding companies. It does not gate anything: a firm can be made here and owned elsewhere, and that is worth telling you rather than hiding.
Where it is made
The maker doesn't say, so neither do we.
This is about the individual product, not the company. A British firm can sell things made abroad, which is normal and not a criticism. We would rather tell you which is which than average them into a score.