1
First, secure the property
If the door won't lock, don't leave the property unsecured. A local locksmith or emergency glazier will board up the opening within 1–2 hours of a call — insurance policies generally cover this as an emergency repair. Get an itemised invoice and photograph everything before boarding.
2
Police and insurance
Report the incident to police on 101 (or 999 if the offender is still nearby) and note the crime reference number — your insurer will need it. Photograph the damage from multiple angles before any repair work. Preserve any physical evidence (tools left behind, jemmy marks) for the police to see.
3
Assess the damage properly
Attempted break-ins usually damage: the cylinder (snapped or drilled), the lock keeps in the frame, the outer face of the door (jemmy marks), and sometimes the internal locking mechanism. A quick professional assessment separates a £150 cylinder-and-keep repair from a full door replacement.
4
Permanent repair options
Cylinder-only damage: replace with a TS007 3-star anti-snap cylinder (£40–£80 + fitting). Frame keep damage: replace keeps and reinforcement (£50–£120). Damaged door leaf: replace the leaf, keeping the frame if it's intact (£400–£900). Frame damaged: full door set replacement (£900–£2,500). Insurance usually covers all of the above minus your excess.
5
Security upgrades to fit at the same time
While the door is out, upgrade to: TS007 3-star cylinder, laminated glass in any glazed panel, dog-bolt reinforced hinges and a Sold Secure Diamond rated lock. Total upgrade cost is £150–£300 over a like-for-like repair and significantly reduces the chance of a repeat attempt.