Rent arrears is now the most-used route to possession. The grounds themselves are the same ones landlords used before — but with Section 21 gone, the details matter far more than they used to.
| Ground | Type | Notice | What it covers |
|---|---|---|---|
| 8 | Mandatory | 4 weeks | At least 3 months' rent unpaid (or 13 weeks if rent is weekly/fortnightly), both when notice is served and at the hearing |
| 10 | Discretionary | 4 weeks | Any rent lawfully due and unpaid, below the Ground 8 threshold |
| 11 | Discretionary | 4 weeks | Persistent late payment, even if the account is square on the day |
Mandatory means that if you prove it, the court must order possession. Discretionary means the court also has to be satisfied it is reasonable — and can suspend the order on terms instead.
There is no downside. Ground 8 gets you the mandatory outcome if the arrears hold up; Grounds 10 and 11 catch the tenant who part-pays strategically or who has paid late every month for two years. All three share the same four-week notice period, so pleading them together costs you nothing in time.
This is the newest and most expensive trap. The court can now only make a possession order under Section 8 if one of these is true: the deposit was protected in an authorised scheme and the prescribed information was served; or the deposit was returned; or a deposit claim was resolved. The exception is only for the antisocial behaviour grounds (7A and 14). Arrears grounds are not excepted.
Worse, protecting the deposit afterwards does not rescue a notice you served while you were in breach. That notice stays invalid. Fix the deposit first, then serve. There is more detail in our guide on unprotected deposits.
Expect one if the property has issues. A tenant in arrears who has been reporting a leak, damp, or a broken boiler can counterclaim for damages for disrepair, and the court can set that award off against the arrears. We regularly see counterclaims that swallow most of a five-figure arrears balance, and where the property is genuinely in poor condition a judge may find it unreasonable to make a discretionary order at all.

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