Emma Baker - she's a qualified Equine Podiatrist (https://www.emmabakerep.co.uk), you'll find her on their register (http://www.epauk.org/membership/our-members/emma-baker/). I'd recommend based on her trimming of mine and now of multiple others. Nick West (Fantastic Vet and EP) and Nick Vincent (Superb EP) are also still practising part time and both mentored Emma, so there's great local referral and depth of knowledge!
We do also have brilliant farriers, Alex Hunter does a fantastic barefoot trim. Jack Williams shoes my youngster as is highly rated by Nick W (and me).