Would highly recommend, they know their stuff!
They assisted greatly with an R & D claim rejection by HMRC from 2022! Simply due to criteria changes in 2024! Sigma had tried our accountant and 2 other individuals to assist but were unable to progress even past the first stage. Simba and his team know the system and the minefield of appeals, etc. They always kept me fully informed and "went the extra mile", eventually achieving a successful appeal. Great work and well worth the fee when all hope was lost for 3 years!

