Vauxhall Agila battery went flat due too not useing vehicle, fitted new battery, when i turn the key i get no dash warning lights only main beam warning light staying on, the engine turns over but dosent start

Strange . Could try disconnecting a battery terminal once more for 10 mins and trying that

have tryed disconnecting the bettery had same problem with a hgv vehicle is was the control relay , is there one fitted to this car ? thank you

See if this helps , Vauxhall Agila mk2 (from May 2012 – 2014) – fuse box diagram Year of production: 2012, 2013, 2014 Engine compartment fuse box (petrol engines) Opel Agila mk2 - bezpieczniki - komora silnika (silnik benzynowy) Vauxhall Agila mk2 (January 2012) – fuse box – engine compartment Number Circuit 1 Heater motor 2 Fuel injection 3 Air conditioning compressor 4 Automatic transmission 5 Brake lamp switch 6 ABS, ESP 7 Starting motor 8 — 9 Power steering control module 10 Ignition switch 11 Radiator fan 12 — 13 ABS, ESP 14 — 15 Engine electrics 16 Front fog lamps 17 Headlamp (left) 18 Headlamp (right) Instrument panel fuse box Vauxhall Agila mk2 - fuse box - instrument panel Vauxhall Agila mk2 – fuse box – instrument panel Number Circuit 1 — 2 Ignition coils 3 Reversing light 4 Instrument cluster 5 Power outlet, cigarette lighter, power exterior mirror 6 Infotainment system 7 Power window 8 Wiper/wash 9 Power steering 10 Airbag system 11 ABS, ESP 12 Door lock 13 — 14 Starter motor 15 HID lamp (left), diesel engine 16 Heated seats 17 Seat heater 18 Heater fan 19 Rear fog light 20 Infotainment system 21 Heated rear window 22 Horn, hazard warning 23 Stop-start system 24 Power window timer 25 Accessory, LHD Stop-start system 26 Infotainment system, LHD Stopstart system 27 Accessory, RHD Stop-start system 28 Infotainment system, RHD Stop-start system WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

ok found the problum its the fuse block fitted too the battery corroded away where would the best place too buy a replacment please

If you don't want to go to dealership parts dept . or a scrapyard https://www.ebay.co.uk/b/Car-Fuses-Fuse-Boxes-for-Vauxhall-Agila/174023/bn_7013597943

thanks for your help