England and Wales · Competition Appeal Tribunal
When must I file a notice of appeal with the CAT?
File the standard CAT appeal within two calendar months of the earlier notification or publication date. An extension requires exceptional circumstances. Check the actual appeal category before using this period.
- Period
- Two calendar months
- Trigger
- The earlier actual date of notification to the appellant or publication of the disputed decision
- Rule
- Competition Appeal Tribunal Rules 2015, rule 9(1)-(7)
Reviewed against the retained current official sources. The statutory appeal route is within Part 2 of the CAT Rules, rather than a merger, market, digital-markets, subsidy or football procedure with its own time limit.
Free calculator · No account needed
Calculate your deadline
Loading calculator…
What lawyers say
5.0“The platform is really easy to use.”
Michael B.Employment litigation attorney · California
“The Evidence Record saved us time with our insurance on bankruptcy matters.”
MariaBankruptcy and commercial attorney · London, UK
“The most up-to-date service we could find.”
Li ChenArbitration practitioner · Singapore
When must I file a notice of appeal with the CAT?
File the standard CAT appeal within two calendar months of the earlier notification or publication date. An extension requires exceptional circumstances. Check the actual appeal category before using this period.
Responsible actor. The appellant challenging an appealable decision.
The earlier actual date of notification to the appellant or publication of the disputed decision
The statutory appeal route is within Part 2 of the CAT Rules, rather than a merger, market, digital-markets, subsidy or football procedure with its own time limit.
The statutory appeal route is within Part 2 of the CAT Rules, rather than a merger, market, digital-markets, subsidy or football procedure with its own time limit. Both actual notification and publication facts are established. Use the earlier date; a later personal notification does not restart a published decision. No exceptional extension or other operative direction changes the ordinary two-month period.
Competition Appeal Tribunal Rules 2015, rule 9(1)-(7)How does this provision count time?
- Exclude the day of the earlier actual date of notification to the appellant or publication of the disputed decision. Count 2 calendar months to the corresponding date, or the last day where that date is absent, under Rule 112(2)-(4).
- The appellant challenging an appealable decision must check the final date under Rule 112(5). A weekend or bank holiday carries the required act to the next nonclosed day; actual directions remain material.
Exclude the day of the earlier actual date of notification to the appellant or publication of the disputed decision. Count 2 calendar months to the corresponding date, or the last day where that date is absent, under Rule 112(2)-(4).
The appellant challenging an appealable decision must check the final date under Rule 112(5). A weekend or bank holiday carries the required act to the next nonclosed day; actual directions remain material.
Competition Appeal Tribunal Rules 2015, rule 9(1)-(7)What do independently checked examples show?
Fictitious example
Fictitious established ordinary branch. The earlier actual date of notification to the appellant or publication of the disputed decision is Tuesday, October 13, 2026.
| Step | What is counted | Date |
|---|---|---|
| Example 1. Ordinary established facts | Fictitious established ordinary branch. The earlier actual date of notification to the appellant or publication of the disputed decision is Tuesday, October 13, 2026. Exclude the effective event day and use the corresponding date in the later calendar month. Apply CAT 112(5) to the required-act endpoint. | Monday, December 14, 2026 |
| Example 2. Closed-day boundary | Fictitious boundary or material scenario. Exclude the effective event day and use the corresponding date in the later calendar month. Apply CAT 112(5) to the required-act endpoint. Exclude the effective event day and use the corresponding date in the later calendar month. Apply CAT 112(5) to the required-act endpoint. | Tuesday, December 29, 2026 |
| Example 3. Material procedural branch | Fictitious boundary or material scenario. Notification is October 13, but actual publication is October 8. Both dates must be retained and the earlier publication controls. Notification is October 13, but actual publication is October 8. Both dates must be retained and the earlier publication controls. | Tuesday, December 8, 2026 |
| Example 4. Material procedural branch | Fictitious established ordinary excluded-event month branch, with no corresponding date in February 2027. Rule 112(3) uses February 28 when the corresponding date is absent. February 28,2027 is Sunday, so the required act carries to MondayMarch 1 under 112(5). | Monday, March 1, 2027 |
Fictitious established facts. These examples do not establish eligibility, effective service, relief or a direction.
Try these dates in the calculatorWhich conditions and exceptions apply?
- Applicable procedure
- The statutory appeal route is within Part 2 of the CAT Rules, rather than a merger, market, digital-markets, subsidy or football procedure with its own time limit.
- Actual triggering facts
- Both actual notification and publication facts are established. Use the earlier date; a later personal notification does not restart a published decision.
- Material qualification
- No exceptional extension or other operative direction changes the ordinary two-month period.
- Counting and completion
- Exclude the day of the earlier actual date of notification to the appellant or publication of the disputed decision. Count 2 calendar months to the corresponding date, or the last day where that date is absent, under Rule 112(2)-(4). The appellant challenging an appealable decision must check the final date under Rule 112(5). A weekend or bank holiday carries the required act to the next nonclosed day; actual directions remain material.
- The statutory appeal route is within Part 2 of the CAT Rules, rather than a merger, market, digital-markets, subsidy or football procedure with its own time limit. Both actual notification and publication facts are established. Use the earlier date; a later personal notification does not restart a published decision. No exceptional extension or other operative direction changes the ordinary two-month period.
- Both actual notification and publication facts are established. Use the earlier date; a later personal notification does not restart a published decision.
What must the responsible actor complete?
Questions about this procedure
When must I file a notice of appeal with the CAT?
Does notification or publication start the appeal clock?
Use whichever happened first. Preserve both dates, including proof of publication, because notification can occur later.
Competition Appeal Tribunal Rules 2015, rule 9(1)Can the CAT extend the two-month appeal period?
Only if the Tribunal is satisfied that the circumstances are exceptional. The Registrar cannot decide an extension request for a Part 2 appeal.
Competition Appeal Tribunal Rules 2015, rule 9(2);110(2)(c)What must my appeal notice contain?
Identify the appellant, respondent, United Kingdom address for service, disputed decision, grounds, arguments, relief and proposed directions. Sign and date the notice.
Competition Appeal Tribunal Rules 2015, rule 9(3)-(4)Must I attach the decision and supporting evidence?
Attach the disputed decision. As far as practicable, also attach each relied-on document and witness statement, with the required schedule.
Competition Appeal Tribunal Rules 2015, rule 9(4)(g);9(6)What if the corresponding date does not exist two months later?
Rule 112(3) provides the last day of that month for the ordinary excluded-event month calculation. Check any weekend or bank-holiday adjustment separately.
Competition Appeal Tribunal Rules 2015, rule 112(2)-(5)Do merger reviews use this same two-month appeal rule?
No. Merger reviews use the four-week period in Rule 25(1). Market investigation reviews and digital-markets reviews have separate provisions.
Competition Appeal Tribunal Rules 2015, rule 25(1)-(2A)Official sources and review
Provisions used (9)
| Provision | Purpose |
|---|---|
| Competition Appeal Tribunal Rules 2015, rule 9(1)-(7) | Check the identified procedure, event, counting rule or qualification |
| Competition Appeal Tribunal Rules 2015, rule 112(1)-(5) | Check the identified procedure, event, counting rule or qualification |
| Competition Appeal Tribunal Rules 2015, rule 111 | Check the identified procedure, event, counting rule or qualification |
| Competition Appeal Tribunal Rules 2015, rule 9(1) | Check the identified procedure, event, counting rule or qualification |
| Competition Appeal Tribunal Rules 2015, rule 9(2);110(2)(c) | Check the identified procedure, event, counting rule or qualification |
| Competition Appeal Tribunal Rules 2015, rule 9(3)-(4) | Check the identified procedure, event, counting rule or qualification |
| Competition Appeal Tribunal Rules 2015, rule 9(4)(g);9(6) | Check the identified procedure, event, counting rule or qualification |
| Competition Appeal Tribunal Rules 2015, rule 112(2)-(5) | Check the identified procedure, event, counting rule or qualification |
| Competition Appeal Tribunal Rules 2015, rule 25(1)-(2A) | Check the identified procedure, event, counting rule or qualification |