I have no affiliation with any of these stores: but they are places I have purchased from myself and found to be reliable, helpful and well priced!
https://www.cultpens.com/ – Massive rage of excellent pens and inks to suit all budgets
https://www.purepens.co.uk/ – one of the UK’s largest collections of inks for purchase including some pretty unusual inks from Troublemaker, De Atramentis and others
https://www.thewritingdesk.co.uk/ – an excellent and reliable seller of outstanding pens, stationery and inks.
https://www.writeherekitenow.co.uk/ – has several exclusive lines and is a wonderful shop with first class customer care
https://www.izumipens.com/ – a newcomer to the market, UK stockist of excellent TWSBI and Lamy, Colorverse and the UK’s first stockist of Van Diemans ink from Tasmania
https://stonecottfinewritingsupplies.com/ – Derek sells wonderful and hard to obtain pens from the likes of Benu, Narwhal as well as Krishna inks and wonderful stationery.
https://www.hamiltonpens.com/ – a brilliant family run shop selling vast ranges of pens, inks and stationery of the highest quality!
https://izods.ink/ – resellers of fine writing instruments and an authority on all things Montblanc. Roy Van den Brink Bugen is a wonderful man but dangerous for your wallet!
These are my excellent friends and colleagues who do incredible pen reviews, blogs, videos and more. Check them out!
Mr. Teal – the excellent Bernardo Gomes does fun video reviews over on YouTube
Pen Friends – the inimitable Andrew Chorley is a truly wonderful and fascinating man, who has a well earned following for his excellent advice, reviews, artwork and more
United Inkdom – the original and best UK meta-review website
UK Fountain Pens – Anthony Newmans excellent and long running site – just a brilliant resource and so well written.
Too Many Pens – follow the inimitable Scribble Monboddo on his journey for the ultimate pen and perfect purple!
SBrE Brown – a fantastic and wonderfully interesting video blogger who reviews a huge range of pens with a truly unique style!