The whole on-line process from application to initial funding and transfer of an existing ISA went through smoothly and quickly. I rang Castle Trust with a query regarding the interest rate on my ISA.... See more
Company replied
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Review summary
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
Opening an account as a new customer was quick and straightforward. The product terms and conditions suit my needs and the interest rate is higher than those available from other providers. Althou... See more
Company replied
I am impressed by the support and information that is available, since my induction as new investor, It has made the initial work of setting up my account details much easier than first thought. The... See more
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All went smoothly. Kept informed via emails and secure messages. Spoke to a very helpful and reassuring member of your team when I noted that my ISA transfer had left one building society but had no... See more
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Company details
Written by the company
Castle Trust Bank was launched as 'Castle Trust' in October 2012, and in June 2020 we became Castle Trust Bank – a fully authorised UK bank. We’ve offered fixed-term, fixed rate savings accounts to existing customers since the end of 2020, and launched online savings accounts to new customers in August 2021. Eligible deposits with Castle Trust Bank are protected up to a total of £120,000 by the Financial Services Compensation Scheme, the UK’s deposit guarantee scheme. We are also a provider of specialist buy-to-let, and property development mortgages.
Contact info
Old Broad Street 25, EC2N 1HQ, London, United Kingdom
- castletrust.co.uk
4.5
Excellent
1K reviews
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Reply from Castle Trust Bank
We're pleased you found the process easy, thank you for your review
Easy to use system Competitive rates.
26 April 2026
Reply from Castle Trust Bank
Thank you for leaving your review
Efficient admin but exceedingly poor interim interest rate
I had applied to transfer my maturing Castle Trust ISA to Virgin Money but this was delayed by Virgin and I ended up reinvesting in a new Castle trust ISA.
Transfer efficiently handle by Castle Trust but I am very disappointed in the 0.1% p.a. interest rate in the Castle Trust Maturity Holding Account during the 4 day delay.
Following the reply from Castle Trust I looked at the terms of their current fixed terms ISA which onclude the following in the section on the Maturity Holding Accounts: '
What is the interest rate?
The interest rate is variable and may change during the life of the product. Please refer to the latest Summary Box at "link" for available interest rates on Maturity Holding Accounts. '
I have looked at the Summary Box for current ISAs and there is no interest rate on Maturity Holding Accounts included.
24 March 2026
Reply from Castle Trust Bank
We're sorry that you are disappointed with our Maturity Holding Account rate. This account is designed as a temporary account to hold funds whilst awaiting an instruction to reinvest (if no instruction to do so is received before the account matures), or whilst awaiting a request to transfer away to another provider. We're unable to extend the Fixed Rate that was payable beyond the maturity date. We're pleased that we were able to reinvest your savings quickly once you decided not to transfer to Virgin Money.
Not the clearest website
It is very difficult navigating your website and folloiwng a clear path to establish an account. I have done this many times in the past and still find it unintuitive.
30 March 2026
Reply from Castle Trust Bank
Thanks for leaving your review - we're sorry that you have found the website difficult to navigate. Should you wish to open another account in the future, once you are on the Savings page you can select your chosen account from the list of available Savings accounts using the 'Learn more and apply' button, after which you can click the 'Apply Online' button once you are ready to proceed.
I have just recently joined Castle…
I have just recently joined Castle Trust and I have had when ringing for information very good and helpful answers too my question.
14 April 2026
Reply from Castle Trust Bank
Thank you for your review, we're pleased you're happy with the service we provide.
…Excellent customer service.
No problem very easy website to navigate. I am very happy with the service.
23 March 2026
Reply from Castle Trust Bank
We're pleased that you found the website easy to navigate.
Reply from Castle Trust Bank
Thank for for your review, we're pleased you found the process easy.
Quick and easy set up and transfer from…
Quick and easy set up and transfer from current ISA
10 April 2026
Reply from Castle Trust Bank
Thank you for leaving your review.
Easy moving my isa
15 April 2026
Reply from Castle Trust Bank
We're pleased you found the process easy.
Very easy to open an account and the…
Very easy to open an account and the transfer in of my previous ISA was handled quickly and seamlessly. Good rate on offer too.
27 March 2026
Reply from Castle Trust Bank
Thank you for saving with Castle Trust Bank!
I requested an ISA transfer which…
I requested an ISA transfer which should be in progress.
You're not keeping me informed but you've already sent two requests to rate your performance.
16 April 2026
Reply from Castle Trust Bank
Thank you for taking the time leave a review and we’re sorry you don’t feel you have been kept informed of the progress of your ISA transfer.
We send an email the day after the account is opened to help set expectations on how long the process might take and send confirmation once the transfer has been successfully completed.
Quick and easy ISA transfer etc...
Quick and easy ISA transfer etc. Very Happy with the service and the Isa % rate too.
S.B.
7 April 2026
Reply from Castle Trust Bank
Thank you for the positive feedback.
Reply from Castle Trust Bank
Thank you for your feedback on the application process.
Pleasant experience
Offer better rate compared to other providers. Staff are very helpful in explaining and resolving issues. Definitely would recommend if continues to offer good rates
8 April 2026
Reply from Castle Trust Bank
Thank you for the recommendation!
Easy trouble-free transaction.
8 April 2026
Reply from Castle Trust Bank
We're pleased you found the process easy.
The account was easy to open and the…
The account was easy to open and the ISA transfer was completed promptly and without any problems. Rate of interest was very competitive
30 March 2026
Reply from Castle Trust Bank
Thank you for your feedback.
Poor Customer Service experience
I initially had problems transferring £20k into the account for the '25 to '26 tax year, I tried again with £1 which worked successfully, however when I then tried to transfer the remainder it was delayed and was then transferred into the '26 to '27 tax year. Your customer services told me there was nothing they could do even though HMRC provides mechanisms to "repair" ISAs. I will now have to pay tax on the interest from a lump sum payment which will have to go into an ordinary savings account.
7 April 2026
Reply from Castle Trust Bank
Thank you for taking the time to share your experience.
We understand your disappointment in missing the 5th April deadline to deposit funds into the 2025/2026 tax year.
The Welcome Email, sent once the account is opened, contains all the details on how to deposit into the new account.
We also updated our website and our IVR telephony messaging to set expectations regarding the deadline for funds to be received for inclusion in the 2025/2026 tax year.
We appreciate your feedback and hope this explanation provides clarity.
Extremely smooth on-line process
The whole on-line process from application to initial funding and transfer of an existing ISA went through smoothly and quickly. I rang Castle Trust with a query regarding the interest rate on my ISA. I quickly got through to a helpful member of staff who answered my query clearly and professionally
25 March 2026
Reply from Castle Trust Bank
Thanks for your feedback on the service you received from our team.
Its a simple 1 year fixed isa
Its a simple 1 year fixed isa. Whats to muck up?. I wont look at it again till the end date.The set up was easy and the transfer problem free, so all good on that end.yeah five stars, keep it up 🫡
30 March 2026
Reply from Castle Trust Bank
Thanks for the feedback, we'll be in touch regarding maturity instructions in a year's time!
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