is they a free Electoral Register online

In the UK, the Electoral Register is generally available for free online, but access may be limited. Local councils usually keep a version of the Electoral Register, which includes the names and addresses of registered voters. However, this version can have restrictions on access, especially for commercial use. For individuals looking to check their own registration status or access the register for personal reasons, they can typically do this through their local council's website. Some councils may provide access to the register or information on how to request it. Keep in mind that while the "open register" (an extract of the electoral register that can be bought by any person, company, or organization) can be accessed more freely, the "full register" (which includes all registered voters and is used for electoral purposes, jury summoning, etc.) is not publicly available online in full. If you need specific details or access, it's best to consult your local council's website for the most accurate and up-to-date information.