Any recommendations for a hammer drill?
IMO for light to medium DIY, the cheaper in store brands are OK if you look after them. Generally I find cheaper power tools last OK if you don't abuse them.
So basically check B&Q, Homebase, Wickes etc for a deal - here's what I'd say are absolutely required:
Lithium ion battery. NiMH or NiCad will die whether you use them or not - Lithium is miles better.
2 batteries. I can't imagine stopping a job to wait 4 hours for a charge.
Hammer drill mode - this is basically what sets a cordless screwdriver apart from a combi drill/driver.
My drill is a Worx thing that was £50 half price from Homebase. Spotted it in 2013 and grabbed while I was skint. Absolutely I'll replace it with better quality when it dies - but it hasn't!
Worth investing in good quality drill bits for brick too, not the ones that come bundled. They're ok but life will be easier with nice ones.
Edit: just had a quick browse on B&Q, this looks like the cheapest with a hammer action and 2 batteries. Do shop around!
https://www.diy.com/departments/ryo...combi-drill-r18pd3-215sk/4892210187468_BQ.prd