I know its getting light...... But cheap nice lights!
4.99 each but the site says 'free uk delivery' but you have to spend over 10 pounds. I suggest 3 sets of these lights!
"The perfect lights to be seen when riding, walking or climbing.
Compact and eye-catching design
Secure, adjustable vecro straps
Constant and flashing modes
Visible for up to 1/2 mile
Up to 100hrs run time using a single CR20302 battery (included)
Translucent rear case for 220 degree of visibility