Saw right angle mains drills (PPPro) for £49 in B&Q yesterday. Well,
they were called "angle drills", had a stubby body - maybe 4-5" - and
a longer handle at right angle so not quite the same as the
Bosch/Mak/Dewalt stuff at Screwfix and wouldn't fit between joists
quite as well, but sort of heading towards a cheap angle drill.....

Just found the pics/tech specs he

http://tinyurl.com/2qp66

Might be a better buy than a cheap chuck that unwinds itself after the
first use.