Precision Finance. Powered by Sirius Nexus .

At Sirius Nexus Ltd, we combine professional qualifications with an MSc in Strategic Finance (UCL) to deliver tailored bookkeeping and accounting services for businesses across the UK. Based in Leamington Spa, our certified FreeAgent practitioners ensure seamless cloud accounting, while our HMRC and ICO registrations guarantee full compliance with AML and data protection regulations.

We’re not just number-crunchers—we’re strategic partners dedicated to simplifying your finances, so you can focus on what matters most: growing your business.

Why Choose Us? 

✅ Professional qualifications – Deep expertise you can trust.
✅ FreeAgent Experts – Streamlined cloud accounting.
✅ Local & Remote Support – Serving Leamington Spa and UK-wide.
✅ Regulation-Compliant – ICO/HMRC registered for your peace of mind.