Subway is one of the world's most famous sandwich shops. I absolutely love going here and it's served me well on my travels across the world when I've been unsure or untrusting of the local cuisine.

The basic idea is that you go in, choose your filling, bread, salad and sauce. There are a wide range of options for fillings including hot meat, cold meat, tuna and a veggie patty. They also tell you on the signs on the walls how many calories are in each sub and there's a sign with all the subs under 500 calories. You can have your sub as either a 6 inch or a foot long; although I'm always tempted to go for the foot long, 6 inch is enough for me for a lunch if I get a cookie as well.

You can also choose to have your filling in either a wrap or as a salad instead with no bread. I used to get the wraps, but I decided I missed the delicious bread too much. My favourite bread is hearty Italian!
Sub of the day is a great idea; every day has a different discounted sub. I have friends who will just get whatever the sub of the day is which means you get something different each time you go in, but I'm a bit too fussy. I'm a vegetarian and, although they do a veggie patty sub, I just get cheese and salad - the Veggie Delight. I find even this is so full of flavour from the salad so a sub with a 'real' filling as well is going to pack a lot of flavour.

One of the reasons I love subway is because it's always consistent. You know that when you step into a subway, wherever you are, you know what to expect. There's usually a few added flavours or salad choices (in Australia you can add avocado which I LOVED and I wish we did it over here) in different countries, but generally you know what to expect.

You can upgrade your sub to a meal including a drink and either a cookie or crisps. The cookies are amazing. Really soft and delicious. Sometimes I go in just to buy cookies - you can get 3 for £1. The drinks are usually from a machine, but sometimes you can get a bottle of drink - it seems to vary from store to store.

One bad thing about Subway is that their slogan is 'eat fresh' and many people see it as a healthy option, but the bread is incredibly high in salt (and sugar) and a lot of the salad isn't really that fresh. It's not got as many saturated fats as some other fast food places, but it's certainly not the healthiest place to eat so just bear that in mind.

Subway also have a loyalty card scheme - you get one point for every 10p spent and when you reach 500 points you get a free 6 inch sub or 1000 points gets you a foot long. So basically you have to spend £50 to get a free subway, but if you visit regularly it won't take long and it costs nothing to collect the points. There is also an app which allows you to do the same thing.