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Paul Caslin is a Principal Associate in the Private Wealth team at Weightmans LLP, based in Liverpool. 

Paul is a fully qualified member of the Society of Trust and Estate Practitioners (STEP) and the Lifetime Lawyer Association, reflecting his specialist expertise in dealing with wills, trusts and estates. 

Paul provides comprehensive tax planning to individuals who require specialist advice for ensuring that their personal affairs are in order during their lifetime and on their death. 

He drafts bespoke Wills and Trusts, Lasting Powers of Attorney and, where necessary, Advance Directives to achieve his clients’ objectives which might include asset protection, inheritance tax (IHT) mitigation and safeguarding vulnerable beneficiaries. 

Paul assists Executors and Administrators with the procedural aspects required to obtain a Grant of Probate or Letters of Administration to a deceased’s estate from the District Probate Registry, including dealing with IHT400 Returns, identifying and claiming appropriate IHT reliefs & exemptions and facilitating the payment of any IHT to HMRC. 

Paul advises Personal Representatives and Trustees on how to administer Estates and different classifications of Trusts (including those with nuanced or cross-border elements) in a manner that is appropriate, constructive and tax-efficient, including their reporting and filing obligations to HMRC and the Trust Registration Service .

Paul prides himself on his client centred, solutions focused approach and his work is recognised across the leading legal directories. He is ranked in The Legal 500 as a Recommended Lawyer (2024 & 2025) and is recognised as a Rising Star (2024) and Leading Associate (2025) for Personal Tax, Trusts and Probate. He is also ranked in the Chambers & Partners High Net Worth Guides as a Recommended Lawyer (2024 & 2025) and recognised as an Associate to Watch (2024 & 2025).

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  • Paul Caslin is described as incredible at what he does

    Legal 500, 2025

  • Paul Caslin has a great rapport with clients and can put them at ease discussing difficult situations. He is technically brilliant and builds a relationship of trust.

    Legal 500, 2025

  • Paul has been so attentive to all our requests and meetings, keeping us up to date along the way. Paul was very sensitive and empathetic at a particularly difficult time for us.

    Chambers and Partners, 2025

  • Paul always provides great service - he shows amazing understanding of the problems surrounding wills and in an estate or trust administration, he deals with beneficiaries extremely well and effectively.

    Chambers and Partners, 2025

  • Key dealings with Paul Caslin, who has been fantastic throughout. Clear, considerate, respectful and extremely knowledgeable and professional.

    Legal 500, 2024

  • Paul Caslin handled my case with the upmost professionalism and care. His advice was excellent and most importantly he was aware of how sensitive some issues were and was conscious of our feelings and needs. I would highly recommend Paul and I'll be forever grateful for the support he gave at such a dreadful time.

    Legal 500

  • I found Paul Caslin to be very approachable, helpful, plain speaking and very knowledgeable. I would recommend Paul to any future clients.

    Legal 500

  • I worked with Paul Caslin to resolve a compicated IHT iissue. He provided clear and concise advice and got the job done.

    Legal 500

  • Paul, thank you for the efficient way my fathers estate was managed and completed. In addition, your kind and sympathetic guidance made what was for me a painless process, a lot less than it might have been.

    Client testimonial

  • Thank you for your prompt attention to our requests, your efficient understandable thorough logical approach to solving our legal requrements. It has been a pleasure to communicate and interact with you.

    Client testimonial

  • Just wanted to send my heartfelt thanks and gratitude for all your help, compassion and the understanding given to me and my children over the past 2 years. I was absolutely lost in 2020 and have no idea where to start with the probate procedure, but you've been fantastic and made the whole thing so much easier for me. I am so happy with the service and assistance I've received.

    Client testimonial

  • Thank you for your help and advice with recent matters and excellent service throughout, very appreciated.

    Client testimonial

  • Thank you for your superb service - making it all happen speedily, smoothly, pleasantly and legally correctly. It has been a privilege to have had you as our solicitor.

    Client testimonial

  • Paul Caslin has been our lead on a complex set of affairs, and I cannot thank him enough for the support and advice given over our journey. Trusts are never easy, but he certainly made the process much simpler.

    Client testimonial

  • On behalf of myself and the rest of the family, I would like to take this opportunity to thank you most sincerely for your unfailing kindness, help and understanding since our initial contact with you almost 2 years ago initially with setting up our Powers of Attorney, drafting our Wills and then, sadly, overseeing the estate administration of my husband. We have been most impressed with your excellent service throughout.

    Client testimonial

  • My sincere thanks to you for all your hard work, expertise and tenacity in getting the matter through all its stages and in particular through the Court of Protection.

    Client testimonial

  • I just wanted to thank you very much for your excellent advice and thoughtful guidance with what was a very delicate matter to myself. I am extremely relieved this matter has been dealt with.

    Client testimonial

  • I wanted to say thank you for your excellent advice regarding each of our affairs. You have been a tremendous help to us both. Feel as if a burden has been lifted from our shoulders.

    Client testimonial

  • The company were very knowledgeable about dealing with difficult Wills and generally very effective. ...Most recently, I was particularly impressed by the work of Paul Caslin and feel that had he been involved from the beginning we would have moved things along much quicker.

    Legal 500, 2025