Technical Interview Guide

Commercial Law Fundamentals for TC Interviews Interview Questions & Walkthrough

Step-by-step explanation, real interview questions, model answers at different levels, and AI-scored practice.

Quick answer

Commercial law covers contracts (formation, breach, remedies), corporate law (M&A, corporate governance), commercial transactions (sale of goods, payment terms), and employment. For Training Contract interviews, focus on: contract essentials (offer, acceptance, consideration), breach and remedies, and practical M&A concepts like due diligence and representations & warranties.

Step 1

Contracts: formation, terms, and breach

A contract is a legally binding agreement formed by: (1) Offer — a clear intention to be bound, (2) Acceptance — unqualified agreement to all terms, (3) Consideration — something of value exchanged (money, goods, services), and (4) Intent to Create Legal Relations. All four must be present. Without any one, there's no contract.

Express terms are the explicit terms (price, quantity, delivery date). Implied terms are inserted by law or custom (merchantable quality, fitness for purpose under Sale of Goods Act 1979). Conditions are major terms (breach allows termination). Warranties are minor terms (breach allows damages only). Understanding this distinction is crucial — breaching a condition is much more serious.

Breach occurs when a party fails to perform. Remedies include: (1) Damages — compensation for loss (awarded in most cases, capped at foreseeable loss), (2) Specific Performance — court orders the party to perform the contract (rare, usually not awarded for personal service or where damages are adequate), and (3) Injunction — court orders a party to refrain from something. In TC interviews, explain which remedy applies and why.

Step 2

Sale of Goods Act 1979: key terms and statutory rights

The Sale of Goods Act 1979 (a core commercial law statute) implies three major terms into contracts for the sale of goods: (1) Title — the seller has right to sell the goods (if title is defective, buyer can reject and claim damages), (2) Description — goods match the description given, (3) Quality — goods are of merchantable quality and fit for purpose.

Merchantable quality means the goods are fit for the purpose they're normally used for. A car sold as new must run; a used car must be in reasonable condition for its age and price. If goods are defective, the buyer can: (1) Reject goods and refuse payment (if still possible), or (2) Accept goods and claim damages. The right to reject expires when goods are accepted (usually after inspection or use).

These terms cannot be excluded by the seller for consumer purchases. For commercial contracts, they can be excluded by clear wording. In a TC interview, articulate: "The Sale of Goods Act implies a term of merchantable quality. If the goods are defective, the buyer can reject them (if still possible) or accept and claim damages. In this case, [apply to facts]."

Step 3

M&A essentials: representations, warranties, and indemnities

In an M&A transaction, the seller makes Representations & Warranties (R&Ws) — statements about the business being accurate (e.g., "the company has no undisclosed liabilities," "all employees have signed employment contracts," "the company owns all IP"). If an R&W is false, the buyer has recourse: indemnity (seller pays damages), earn-out adjustment (lower purchase price), or rescission (unwind the deal).

Representations must be true at signing. Warranties must be true at both signing and closing (post-signing changes are the seller's problem if they breach a warranty). This distinction matters for liability allocation. If a customer leaves post-closing, that's usually the buyer's issue. If a customer had already left pre-closing but the seller didn't disclose it, that's a breach of warranty.

Indemnities are contractual promises to cover losses. Example: "Seller indemnifies Buyer for any breaches of R&Ws, up to £5m aggregate, with a £500k basket (no claim under £500k) and a £1m cap per claim." These caps protect the seller from open-ended liability. In interviews, explain how indemnities allocate risk.

Step 4

Due diligence and disclosure: what lawyers examine

Due diligence is the buyer's investigation of the seller's business before signing. Lawyers examine: (1) Corporate structure (ownership, subsidiaries, corporate governance), (2) Material contracts (supplier, customer, financing agreements — are they terminable on change of control?), (3) Regulatory/compliance (licences, permits, environmental, health & safety), (4) IP (patents, trademarks, copyrights — owned or licensed?), (5) Litigation (pending disputes, regulatory investigations), (6) Financials (accuracy of accounts, going concern, cash basis reconciliation).

The Disclosure Letter (or Data Room) is the seller's response listing all disclosures. If an issue is properly disclosed, the buyer can't claim a breach of R&W (caveat emptor — buyer beware). This is why disclosure is critical. Sellers over-disclose to protect themselves; buyers scrutinise to find issues.

Closing conditions are conditions that must be satisfied for the deal to close (no material adverse change, R&Ws remain true, no litigation). If conditions aren't met, the buyer can walk or renegotiate. In TC interviews, understand that due diligence and closing conditions are how buyers protect themselves.

Step 5

Employment law essentials: contracts, termination, and compliance

Employment contracts must comply with the Employment Rights Act 1996 and Equality Act 2010. Key elements: (1) Job title, duties, location, (2) Salary, benefits, notice period, (3) Confidentiality, IP ownership (critical in tech), (4) Non-compete and non-solicitation clauses (must be reasonable in scope and duration to be enforceable).

Termination: employees can be dismissed if there's a fair reason (misconduct, poor performance, redundancy, breach of statutory restriction like loss of driving licence for a driver). The process must be fair (investigation, opportunity to respond, appeal). Unfair dismissal claims can result in £100k+ awards. Redundancy requires consultation and statutory payments.

Discrimination law (Equality Act 2010) prohibits discrimination on protected grounds (sex, race, disability, age, religion, sexual orientation). Direct discrimination (treating someone worse because of a protected characteristic) is almost always unlawful. Indirect discrimination (a facially neutral policy that disproportionately affects a protected group) is unlawful unless objectively justified.

Questions

Commercial Law Fundamentals for TC Interviews interview questions

  • 1What are the essential elements of a contract?
  • 2What is the difference between conditions and warranties?
  • 3What are the remedies for breach of contract?
  • 4What does the Sale of Goods Act 1979 imply into a goods contract?
  • 5If goods are defective, what can the buyer do?
  • 6In an M&A deal, what are representations and warranties?
  • 7What is the purpose of an indemnity in an M&A transaction?
  • 8What do lawyers examine during due diligence?
  • 9What is a Material Adverse Change (MAC) clause and why does it matter?
  • 10What is the difference between employment and self-employment?
  • 11What are the main grounds for fair dismissal?
  • 12What is indirect discrimination under the Equality Act 2010?
  • 13What are non-compete clauses and when are they enforceable?
  • 14What is the purpose of a disclosure letter in M&A?

Model answers

Example answers at different levels

Click a level to see the expected answer depth.

Question

What are the essential elements of a contract?

Answer

A contract requires four things: (1) Offer — someone makes a clear proposal, (2) Acceptance — the other person agrees to exactly those terms, (3) Consideration — both sides give something of value (like money or goods), and (4) Intent to Create Legal Relations — both parties intend to be legally bound. If any of these is missing, there's no contract. For example, if you offer to sell a car for £5,000 and I say "I'll pay £4,500," that's a counter-offer, not acceptance. There's no contract until one of us accepts the other's terms.

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Follow-ups

Common follow-up questions

1

If a seller discloses an issue in the data room but the buyer misses it, can the buyer claim a breach of warranty?

2

What is the difference between breach of condition and breach of warranty in terms of remedies available?

3

How would you advise a client on enforceability of a non-compete clause?

4

What steps must an employer take before dismissing an employee for poor performance?

5

In an M&A deal, if a customer leaves post-closing (within the indemnity survival period), is that a warranty breach?

6

What is the relationship between indemnities and insurance in M&A transactions?

7

How do warranties and indemnities interact with earn-outs?

Avoid

Common mistakes on commercial law fundamentals for tc interviews questions

Confusing offer and invitation to treat. A price in a shop window is an invitation to treat (not an offer). The customer makes the offer; the shop accepts or rejects. This matters for contract formation.

Not understanding the Sale of Goods Act 1979 applies only to sale of goods, not services. A contract to provide consulting is not governed by SOGA (though similar protections exist under common law and UCTA 1977).

Thinking all R&Ws are equally important. Some are material (affect deal value), some are standard and routine. Focus on material R&Ws and push for longer indemnity survival periods on those.

Assuming indemnities are unlimited. Indemnities almost always have baskets, caps, and survival periods. These are negotiated and vary by deal. A £10m cap on £100m deal is very different from a £10m cap on £500m deal.

Not understanding MAC clauses. A MAC (Material Adverse Change) allows the buyer to walk if something materially changes between signing and closing. MACs are rare to invoke (high bar) but critical for large deals with long closing periods.

Treating discrimination law carelessly. Indirect discrimination is often unintentional but still unlawful. A policy of "no flexible working" might be indirect discrimination against women (who are more likely to request it for childcare). Defences exist, but the risk is real.

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