I decided to get a bike to travel to and from the supermarket when I'm at university... not only does it save me £1.70 each way on the bus but I may also get fitter too! In order to keep it safe outside the shop I decided to invest in a bike lock.

Ideally, I wanted a bike lock without a key because I could guarantee I'd lose it and have no access to my bike! I also wanted a flexible lock that could protect both the frame and front wheel. When I came across the 'Tesco Activequipment 1.8M Combination Lock' it ticked both boxes so I bought one straightaway.

This lock has a combination device featuring four numbers which I think is a great advantage because normally there are only three digits and thus make it that little bit easier to break the code! When you first get your lock it is set to 0000 but with the simple instruction booklet included you can change that combination to whatever you like. I tend to change mine every couple of weeks anyway for added protection.

The lock is made from steel, which makes it quite heavy, but it gives it that robust and strong feel that you would expect from a secure lock. The metal is encased in a black plastic to protect your skin against any sharp parts. This also makes it good for all weathers... i.e. preventing rust on the metal. The lock is very easy to manoeuvre around the frame and wheels. When I am cycling I tend to tie it underneath the seat and this lock allows for that, without it affecting the movement of the bike. Furthermore, if you wish to store it away the lock coils into a circle and there is a Velcro tie included to keep the rings together.

The lock measures 1.8 meters, which is the right length for my securing my bike to its location. I have never had any problems fastening the lock together... there has always been enough length to accommodate this.

I have been using my lock for a year now, and so far my bike has not been stolen! The lock is still in good condition and I will continue to use it - that is until someone guesses my combination or puts a hefty pair of pliers to it! The lock costs £8 from Tesco stores (meaning you also get clubcard points!), but I would imagine you could find a similar one in other supermarkets. I think it is a fair price to pay for a sturdy bike lock and I would definitely get one again, should the need arise.

I am giving this lock four out of five because it gives me piece of mind when I use my bike... but my bike was a cheap second-hand model! I would not deem this lock suitable for an expensive mountain or racing bike and I would advise you invest in something more sturdy and pricey.