Sealey has been selling tools and workshop equipment in the UK since long before most online stores existed. The domain was registered in 1996, which is a strong sign of a real business with staying power. For anyone wondering "is sealey.co.uk a scam", the evidence says no. The site uses modern security, publishes a privacy policy and terms of service, and provides contact information and an about page. That level of transparency is exactly what you want from an e-commerce seller.
What about the 22 external scripts? For a site that uses BigCommerce, integrates Google Pay, and likely runs analytics and marketing tools, that number isn't alarming. It's more common than unusual for a retailer of this size. Sealey.co.uk reviews from customers are not gathered here, but the site's age and lack of blacklist or security warnings speak for themselves. If you're looking to buy tools online, this is a safe place to do it.