Hello, hello, hello!
Thanks for all the posts. In relation to thefts from homes / garages and sheds. Some people are reporting this form of theft and this is a serious offence.
In Bristol, the majority of bikes are still stolen from the street, many as a result of being locked inadequately (either thorugh use of inferior locks and / or bad locking etiquette).
Whilst it is prudent to be aware of your surroundings and who is nearby when returning home, I do not wish people to become so worried that they are reluctant to go cycling.
Everyones situation will be different, and the advice I give here may not be practical for everyone's circumstances.
The most secure place to keep a bike is in the house (not so easy if you live in a one room flat); than a garage; then a shed and finally storing outside leaves your bike the most vulnerable.
If storing outside, remember to store in a concealed location near a window where you can keep an eye on it and cover your bike to protect it from prying eyes (and the elements).
Some companies sell bike lockers for domestic use. Always go for a locker that is accredited by the Association of Chief Police Officers (ACPO) Secured by Design scheme (www.securedbydesign.com). Not a cheap option, but good if you don't have room for a shed or garage.
Consider investing in a ground anchor. An anchor with a sold secure rating will be best as they have been tested against attack. Visit http://www.soldsecure.com for more details.
I would recommend that the anchor is mounted on a wall as this will prevent locks having contact with the ground which leaves them vulnerable to lever, bolt cropper and chisel attacks.
When locking at home, I would encourage everyone to invest in motorcycle locking equipment as this is stronger and as you are not taking the equipment out with you, weight is not an issue.
If you are storing in a shed or garage consider investing in a simple alarm system. Most DIY stores will sell a cheap system with Passive Infra Red (PIR sensors). This will not be connected to a monitoring station, but will make a loud noise when activated which may cause the offenders to leave and allow you to call the police. Remember to put warnings stickers outside the shed / garage to further dissuade offenders.
When locking remember to lock the back wheel, frame and item you are locking to; the front wheel, frame and to lock the seat to the frame, or take it into the home.
There are good products available to reinforce and lock garage doors. If purchasing these, check that they are sold secure and / or secured by design approved and that once fitted there is not the opportunity for offenders to peel the lower corner of a garage door to gain access. In this case it may be worth fitting two of the same product to prevent this.
Security measures that are homemade or improvised may look intimidating, but can usually be defeated by a thief as a result of poor design or being constructed from inadequate materials.
I monitor the security industry for new technology and products that are on sale, and if I can recommend the cheapest option, I will.
I hope this helps.
Stay safe and vigilant,