2000 Renault Clio electric. airbag and speedo

Hi, I have a Clio 1.2 w reg. About a month ago my car hit some gates which was a slight knock as my handbrake started to go. But ever since the Speedo cuts out now and then as for instance if I drive around town its ok longer journeys it cuts out then comes back. Recently it's got worse and cuts out more when it does the trip computer cuts out too.

Not just the Speedo has broken but also sometimes when I lightly touch the brake the lights on the side on the dash come on (fog light light). Also my airbag warnings light and the service light comes on.

I'm just wondering if you can help diagnose it may be that the airbag needs resetting and there's a loose connection. Im not sure but also if someone can help with a predicted price as monies tight.

thanks a lot. Sorry if English is not perfect as on phone.

cheers Connor