Having not used my Octavia for some time due to injury, I had to charge the battery as wasn't enough power to start the engine. However on reconnecting the battery I have several weaning lights on the dash. How can I remove or reset the systems?

If it's anything like other Skodas just take it for a drive and do a full left lock to full right lock and back turn of the steering wheel.

All transient fault lights triggered by battery removal and replacement should clear themselves after a short drive and turning steering wheel lock to lock.

Yes - all of the lights that came up from my almost-dead battery cleared by themselves. The same wasn't true for some of the error codes, obviously, but there was nothing on the dash.

It depends how old your battery is, etc. If it's already fairly old then leaving it for the time you did might have pushed it over the edge. I had mine on charge for a good 12 hours, but it was past saving and still threw up some pretty lights when starting. YMMV.

Yes a short drive following a left to right full lock has cleared the warning lights, thanks everyone for your help.