I have no idea whether any of these would still be good. All packets are in good, sealed condition. I have rescued them from a widowed friend's kitchen. They must all go as a job lot. 
Inspired to Cook by Sainsbury's: 
Hollandaise x 6 May-July 2023 
Lemon, butter and dill x 2 July 2023 
Garlic, mushroom and cream x 1 Aug 2023 
Creamy peppercorn x 1 Jun 2023 
Schwartz: 
Hollandaise  x 2 Apr 2022 
Creamy mild peppercorn x 1 Apr 2023 
Mix for Mediterranean roast veg x 1 Dec 2012 
Mix for spag Bol x 1 Feb 2011 
Creamy pepper x 1 May 2022 
Sainsbury's: Cheese sauce x 1 Jun 2010 
Colman's: Lamb hotpot x 1 May2011 
Four cheese x 1 Jan 2010 
Blue Dragon sweet & sour sauce x 1 Oct 2023 
Bisto Best lamb gravy with mint x 1 Jan 2013 
Homepride Coat & Cook Southern Fried x 1 Apr 2014