Do you have a monogamous relationship

No

I use whichever is the most convenient / cheaper / stock the goods I want.

I am an absolute tart when it comes to Supermarket Shopping.

I usually walk, so available time is a deciding factor as is the quality of the product.

Price is plays only a minor part in the decision making process

I use whichever is the most convenient / cheaper / stock the goods I want.

Same here.

I also value, very highly, the various social interactions [chit chat] that occur at bus stops and on bus journeys to-an-fro my local bigname store, almost on a daily basis.

I use the one that has sent me the best value vouchers.

Sainsbury's and Tesco's seem to be fighting for my custom by continually outdoing each other. At the moment Sainsbury's are winning with a £6 off £30 voucher.

Someone in my family works for a supermarket, so family loyalty comes into it as far as my shopping goes.

The Loyalty card rewards are a handy extra, but I think those days are numbered - food retailing is changing, and customers are being influenced far more by straightforward value for money than by bells and whistles.

Not exactly, most of the stuff is from Tescos and the Xmas points bonus is always nice but I also carry Nectar and Morissons cards and have been known to use Aldi and Lidl.

The wife does most of her shopping at Tesco but will admit it is not the cheapest just the most convenient for her. Parking, quality and range of goods etc. also come in to it. When I used to do the shopping I went to a local supermarket known as Kwik Save just because it was the least expensive. Kwik Save has now closed and there is an Aldi in it's place so I would probably go there for my shopping.

I use most of them

like the Lidl sausages and the "Mars bars" are cheaper and taste exactly the same.

Petrol comes from Tesco as its the nearest and I'm not driving 2 miles further to save 0.02p/litre

However Tesco Deli stuff tastes like cardboard so Asda wins there

Wife likes certain things that she can only get from Sainsburys.

and I like to browse the weekly offers in Aldi where my old Medion PC came from.

Best of all the small local M&S sells a delightful Elderberry and Blackcurrent wine.

We visit several supermarkets and while we use their loyalty cards, it doesn't influence our shopping as far as I'm aware.

One advantage of not going to a particular one too frequently is that they tend to give you discount vouchers to tempt you back which are of more value than points on the loyalty card.