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Architecture & Engineering - What is the ideal type of technical information required to produce an R&D claim?

The legislation and guidelines around R&D tax are ever-changing and clarifying over time; in particular, HMRC has sometimes been vague about their general requirements in information from companies claiming R&D tax.


However, time brings increased clarity in what specific documentation is most valuable. As such, we can provide improved guidance on what documentation you should keep close track of as you continue claiming for R&D. This is especially worth bearing in mind for new projects, but it is also relevant for ongoing projects.


This includes the following documentation focusing on details relating to the timeline of a project:

  • Internal documents proposing the project.

    • Documents or correspondences regarding the progress of the project:

    • These will often be email or group texts/messages but may also be notes or more formal write-ups. These are particularly useful if they contain a discussion of the difficulties of the project and changes that needed to be made during the relevant period.

  • Diagrams of the design that was under development. Again, preferably multiple iterations (with inclusion of dimensions or scale change where appropriate).

  • Results from acoustic or fire safety tests.

  • Photographs of the developed solution or the site before, during, or after construction.

    • Any preliminary survey or site assessment maps.

  • Relatedly, any documents that show the eventual success or failure of the project’s goal, if the project has concluded, these will be the final iterations that received approval; if it is ongoing, just the most recent iteration at the end of the relevant period.

    • External documents presenting the project to those it requires approval from.


If you, or anyone you know, want to discuss our R&D tax and/or R&D grants services in more detail, please contact us via or 0141 378 4969!  


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