Supermarket free Customer service contact details

Came across a list of supermarket customer service contact details, all of which have either a freephone number or phoneback service. So what could I do but share the info :>)

ASDA 0500 100 055 Free phone
https://www.asda.co.uk Use feedback form on website
Customer Services, Great Wilson Street, Leeds LS11 5AD

Co-op 0800 317 827 Free phone
https://www.co-op.co.uk
E:customer.relations@co-op.co.uk
Co-operative Group (CWS) Ltd, Customer Relations, Freepost MR9473, Manchester M4 8BA

Iceland Foods 01244 842 842 Call back service
https://www.iceland.co.uk Use feedback form on website
Iceland Foods plc, Second Avenue, Deeside Industrial Park, Deeside, Flintshire CH5 2NW

Marks & Spencer 0845 302 1234 Call back service
https://www.marksandspencer.co.uk
E: retailcustomer.serviceS@marks-and-spencerco.uk
Marks & Spencer Registered Offices, Michael House, Baker Street, London W1U 8EP

Sainsbury's 0800 636 262 Free phone
https://www.sainsbury.co.uk
E: cismd@email.sainsburys.co.uk
Sainsbury's Supermarkets Ltd, 33 Holborn, London EC1N 2HT

Somerfield 0117 935 6669 Call back service
https://www.somerfield.co.uk
E: customer.service@somerfield.co.uk
Somerfield Stores Ltd, Somerfield House, Whitchurch Lane, Bristol. BS14 OTJ

Tesco 0800 505 555 Free phone
https://www.tesco.co.uk
E: customer.services@tesco.co.uk
Tesco House, Delemare Road, Cheshunt, Waltham Cross, Hertfordshire EN8 9SL

Waitrose 0800 188 884 Free phone
https://www.waitrose.co.uk
E: customer_service@waitrose.co.uk
Waitrose Ltd, Doncastle Road, Bracknell, Berkshire RG12 8YA

William Morrison 01274 356 000 Call back service
https://www.morereasons.co.uk No feedback form on website
Customer Service Department, Wm Morrison Supermarkets plc, J41 lndustrial Estate, Carr Gate, Wakefield WF2 OXF