
Engineering companies often perform Research and Development on a day to day basis. Electrical engineering is no exception. I often speak to business owners that know what they're doing may qualify as R&D but don’t know exactly which projects they can claim for, or for how much. This client was part of that group – and we were quickly able to help them define and claim for their electrical engineering R&D.
As a leading electrical engineering firm in South Wales, this company was used to solving complex issues for clients. These issues often relate to machinery or legacy systems. There was no doubt that some of the work conducted would meet the definition of electrical engineering R&D.
The client previously had an R&D Claims company to visit them. The agent handed over a question form for the client to fill out to determine what could be claimed. Zest took a much more hands-on approach – a big part of our job is minimizing the impact of making a claim on our clients’ business – whilst maximizing the value of their claim.
We had a 2-hour meeting that reviewed the clients’ previous projects in depth. We determined which projects were eligible as electrical engineering R&D and what costs could be included. During this meeting, most of the information needed to justify their claim was captured. A few emails and short phone calls over the following week, and a final set of claim documents were ready for the directors to review and approve.
As I expected for an electrical engineering company - there were several research and development projects the client had conducted. A few examples of these:
We were also able to advise the client on what costs would qualify, and why HMRC would deem they were the company conducting the R&D, not the company being sub-contracted to do so. This technical knowledge is critical to ensure there is no reason for HMRC to query the claim.
And because Zest acted quickly – we were able to submit a claim for the financial year 17/18 – before the window closed for their claim to be submitted. This meant the client did not miss out on £000’s of R&D tax credits for the work they had previously done.
In total, the process to create and approve the claim took about 10 days, and within a month of the claim being submitted – HMRC had paid the tax credits. You can see the owners' review on Google. Their expenditure over the 3 claim periods totaled over £97,000. That meant they received a tax credit for two previous years and a reduction in corporation tax this year which totaled over £23,000.
All-in-all a great result, and an example of how a well-managed R&D tax credit claim can be quick, painless, and effective when conducted by Zest R&D.

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The Chancellor will deliver the Autumn Budget 2026 on Wednesday 28 October. For any UK company running an R&D tax relief claim — or planning its first — it is worth knowing what is genuinely on the table before the red box opens, and what is simply noise. The short version: after three years of near-constant reform, the R&D regime is finally settling. Most of what matters for your next claim is already law. But a Budget always carries the risk of a technical tweak, and there are a few signals worth tracking. Where the R&D rules stand going into the Budget The big structural change is done. The merged RDEC scheme is now the default for accounting periods beginning on or after 1 April 2024, replacing the old separate SME and RDEC regimes. It gives a taxable expenditure credit of 20% of qualifying R&D costs — worth roughly 15% net once Corporation Tax at 25% is applied. Loss-making, R&D-intensive SMEs are the exception. If your qualifying R&D is at least 30% of total expenditure, you may instead claim under Enhanced R&D Intensive Support (ERIS), which offers a more generous deduction and a payable credit for surrenderable losses. None of […]