Go for the Argos mower.......
Years ago my Mother had a lawn aprox. 20ft x 30ft and she bought a Black and
decker electric mower, it did the job for almost 8 years.
As for edging, then a car boot sale for a pair of edging shears for a couple
of quid, after al you only have 40 ft to cut, shouldn't take you 10 mins to
do the lot.

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk