Introduction

If you're upgrading the security of your uPVC or composite door, one of the first decisions you'll face is whether to fit a TS007 1 Star or TS007 3 Star euro cylinder. Both offer a significant improvement over older standard cylinders and are designed to resist common burglary techniques such as lock snapping, drilling, picking and bumping.

The main difference is how they achieve their security rating. A 1 Star cylinder is designed to work alongside a security handle, whereas a 3 Star cylinder achieves its full security rating on its own. Understanding the difference will help you choose the most suitable option for your door.

Understanding the TS007 Star Rating

TS007 is the British security standard used for euro cylinders and security door furniture.

A door can achieve an overall TS007 3 Star security rating in one of two ways:

• A TS007 3 Star euro cylinder fitted on its own.
• A TS007 1 Star euro cylinder combined with a TS007 2 Star security handle.

Both combinations provide an excellent level of protection when correctly installed.

What Is a 1 Star Euro Cylinder?

A TS007 1 Star cylinder is a high-security lock designed to resist common methods of forced entry.

Typical features include:

• Anti-snap protection.
• Anti-drill protection.
• Anti-pick protection.
• Anti-bump protection.
• Reinforced internal components.
• Sacrificial snap sections.

These cylinders are designed to work in conjunction with a TS007 2 Star security handle, which protects the outside of the cylinder.

Together they achieve the full TS007 3 Star security rating.

Benefits of a 1 Star Cylinder

Advantages include:

• Excellent anti-snap protection.
• Lower replacement cost if the cylinder needs changing.
• Allows homeowners to upgrade both security and door furniture together.
• Protects both the cylinder and surrounding handle area.
• Ideal when existing handles are worn or outdated.

Many locksmiths recommend this combination because it upgrades two vulnerable parts of the door at the same time.

What Is a 3 Star Euro Cylinder?

A TS007 3 Star cylinder achieves the highest TS007 rating without requiring a security handle.

The enhanced protection is built directly into the cylinder.

Typical features include:

• Enhanced anti-snap technology.
• Reinforced body construction.
• Anti-drill pins.
• Anti-pick protection.
• Anti-bump protection.
• High-strength internal components.

This allows the cylinder to achieve a 3 Star security rating on its own.

Benefits of a 3 Star Cylinder

Advantages include:

• Full TS007 3 Star rating without changing the handles.
• Quick security upgrade.
• Ideal when existing handles are already in good condition.
• Excellent protection against common burglary methods.
• Simple installation.

For many homeowners, replacing only the cylinder is the most economical solution.

Why Security Handles Matter

Although a 3 Star cylinder offers excellent protection on its own, security handles provide an additional physical barrier around the cylinder.

A TS007 2 Star security handle typically features:

• Reinforced backplates.
• Cylinder protection.
• Anti-grip design.
• Improved resistance to attack.

Rather than exposing the cylinder, the handle helps shield it from direct attack.

This is why many security professionals favour the 1 Star cylinder and 2 Star handle combination, particularly where the existing handles are older or offer little protection.

Which Option Is Better?

The answer depends on the condition of your existing door furniture.

Choose a 1 Star Cylinder + 2 Star Security Handle if:

• Your handles are old.
• The handles are worn.
• The handles offer little cylinder protection.
• You want to modernise the appearance of the door.
• You're replacing the handles anyway.
• You want both improved security and new hardware.

Choose a 3 Star Cylinder if:

• Your existing handles are already high quality.
• You don't want to replace the door furniture.
• You want a straightforward cylinder upgrade.
• Your handles are in excellent condition.

Both options provide the same overall TS007 3 Star security rating.

Correct Cylinder Size Is Essential

Whichever option you choose, selecting the correct cylinder length is just as important as choosing the security rating.

A cylinder that protrudes beyond the handle creates an unnecessary security weakness.

A correctly fitted cylinder should:

• Sit as close to flush with the handle as possible.
• Operate smoothly.
• Have minimal external projection.
• Be measured specifically for the door.

Even the highest-rated cylinder can become more vulnerable if incorrectly sized.

Door Alignment Still Matters

Upgrading the cylinder won't solve problems caused by a dropped or poorly aligned door.

If the door:

• Catches the frame.
• Requires force to lock.
• Has a stiff handle.
• Has a difficult key.
• Needs pushing or pulling.

The alignment should be corrected at the same time.

A properly aligned door places far less strain on:

• The euro cylinder.
• The gearbox.
• The handles.
• The multipoint locking mechanism.

This helps maximise the lifespan of the new lock.

Which Option Do I Recommend?

In many cases, I recommend fitting a TS007 1 Star anti-snap euro cylinder together with a TS007 2 Star security handle, particularly when the existing handles are dated, worn or provide little protection around the cylinder. This combination not only achieves the full TS007 3 Star security rating, but also upgrades the appearance of the door and protects the cylinder from attack.

However, if the existing handles are already in excellent condition and offer good cylinder protection, fitting a TS007 3 Star cylinder on its own can be the more cost-effective solution.

The best choice depends on the condition of the door, the existing hardware and the level of protection you're looking to achieve.

Conclusion

Both TS007 1 Star and TS007 3 Star euro cylinders provide a significant improvement over older standard locks and offer excellent protection against lock snapping, drilling, picking and bumping. The right choice depends on your existing door furniture. If you're replacing worn handles, a 1 Star cylinder paired with a 2 Star security handle delivers outstanding security while refreshing the appearance of your door. If your handles are already in good condition, a 3 Star cylinder provides the same high level of protection without the need to replace them. Whichever option you choose, ensuring the cylinder is correctly sized, professionally fitted and installed on a properly aligned door is the key to achieving the highest level of security and long-term reliability.