From another Clio check its not still on, or inside the door card they come with the handle cover and not listed separately so a used handle will be cheaper than ordering the clips if you were able to get a part number as the clips look different sizes and types.
Well you asked where to get them if you went to a breaking yard I cant see anyone asking more than £10 Renault normally ask £4-5 for a bolt so that's life any Mk3 Clio have them why not become a member it's £5 a year with other options more likely you will get more help if you belong.