Trademark Registration and Infringement Advice Needed

I've developed a product line and want to protect my brand across the UK market. I'm looking to register trademarks for my main brand name and logo, and I've also noticed a competitor using something very similar to my design online. I need advice on whether this constitutes infringement and what steps I should take. I'd also like guidance on the registration process itself and timeline. What I'm looking for: Initial trademark registration strategy, infringement assessment of the competitor's use, and advice on enforcement options if needed.