The company was set up by two brothers, R.H. and A.G. Hacker, who had previously founded Dynatron Radio Ltd. which they sold to Ekco in 1955. Hacker production began in 1960 and went on until the end of the 1970s, but from 1976 the company changed hands more than once and the very last Hacker sets were made after relocation to a factory in Bournemouth. Radiograms abd audio equipment were made as well, but Hacker were best known for their portable sets, widely thought to be the finest made in the UK.
I started a Hacker Radio group a couple of years ago for the exchange of information among enthusiasts: membership stands currently at 76 and anyone is welcome to join,
http://groups.yahoo.com/group/hackerradiogroup /
Photos of and sales leaflets for quite a few Hacker products are available there, in an archive which I hope will continue to grow.
Oh, and the sides of all Hacker radios when not covered by leathercloth were definitely real wood... and there was no connection with the American Hacker company.