UK corporate card that blocks spending at chosen kinds of merchant

Yes. Look for merchant-category controls—often called MCC or merchant category group (MCG) blocking. They can decline transactions at selected types of businesses, such as gambling, bars or general retail.

UK options to check:

• Soldo — lets admins allow or block merchant categories, including subcategories, on employee cards. (support.soldo.com)
• Lloyds Corporate Purchasing/Charge Cards — offers merchant-category controls; Lloyds describes blocking at Merchant Category Group level. (lloydsbank.com)
• Revolut Business — has merchant and category spend controls, though its listed category controls may be less granular than Soldo’s. (help.revolut.com)
• Ramp UK — advertises merchant and category restrictions for corporate cards. (ramp.com)

Worth knowing: these controls rely on how the merchant is classified by the card network, so they block a type of merchant—not necessarily particular items bought inside a shop. If you tell me your company size and which merchant types you want to block, I can narrow down the best fit.

Several UK corporate card and spend-management products let you block chosen merchant categories. The search results didn't confirm MCC-blocking for most high-street bank cards, so check the specific product before you buy.

Spend-management cards (strongest fit)

• Spendesk: It issues physical, single-use virtual, and recurring virtual smart company cards in the UK, with no per-user charges and no per-card charges. Its card controls include per-card spend limits, merchant category restrictions, and pre-payment approval enforcement. Note that its cards are prepaid, so they're funded upfront rather than credit.
• Payhawk: Offers recurring limits, single-transaction caps, merchant category allow/block lists, country restrictions, and time-based controls. It suits larger teams with significant international spend.
• Emburse: Its cards let finance teams set individual spend limits, block specific merchant categories, and enforce multi-level approval workflows. It also works as an overlay on an existing credit line, which may suit you if you want to keep current high-limit cards.

Credit cards

• The results didn't confirm MCC-blocking features for Amex Business Gold, Capital on Tap or Tide. Check their card-control settings directly. Also note that Capital on Tap, the Tide Business Credit Card, and American Express Business Gold have eligibility restrictions. Amex are now restricted to limited companies and LLPs, and you have to be a director or an LLP member.

Things to check before choosing

• Ask whether blocks are applied at the point of sale. Blocks apply at the point of sale so the transaction just declines if it doesn't fit the rules.
• Ask whether the provider offers allow-lists as well as block-lists. Allow-lists suit single-purpose cards. For single-purpose cards, such as a marketing card, use an allow-list instead of a block-list.
• Be aware of the limits. Category codes are assigned by the merchant's processor, so a block-list is a strong filter rather than a perfect one. Keep receipt checks alongside blocks.

If you tell me your company size, whether you need credit or can work with prepaid, and roughly how much you spend, I can narrow this down.

In the UK, the most effective way to block spending at specific types of merchants is by using a spend management platform that offers Merchant Category Code (MCC) controls.

Unlike traditional bank-issued corporate cards, these modern platforms allow you to set granular, real-time rules for each physical or virtual card you issue to employees.

How It Works

• Merchant Category Codes (MCCs): Every merchant is assigned a 4-digit code (e.g., 5812 for restaurants, 7995 for gambling) when they set up their card payment processing.
• Real-Time Enforcement: When an employee attempts a transaction, the platform receives the merchant's MCC and compares it against your rules. If the category is blocked, the transaction is declined instantly before it can be processed.

Recommended Platforms for UK Businesses

Several platforms popular in the UK provide this level of control. They are typically paired with expense management software, making them ideal for enforcing company policies:

• Soldo: Highly regarded for its strict control features. It allows you to create specific card rules, such as blocking categories like gambling or bars, and even limiting cards to specific categories like "Transport" for fuel cards.
• Pleo: Widely used by UK SMEs, Pleo allows for robust expense tracking and card controls, including the ability to limit where and how cards can be used.
• Spendesk: Designed for businesses with more complex spending needs, it offers advanced approval workflows and granular card restrictions based on merchant categories.
• Airwallex: Provides multi-currency corporate cards with flexible spending controls, including MCC-based restrictions suitable for growing businesses.
• Wallester / Payhawk: Both are frequently cited in the UK market for their strong integration with accounting software (like Xero and QuickBooks) and their ability to apply per-card limits and category controls.

Important Considerations

• Limitations of MCCs: While MCC blocking is powerful, it is not always perfect. Some merchants may use generic or "miscellaneous" codes that do not accurately describe their business, which can occasionally lead to legitimate expenses being blocked or prohibited ones slipping through.
• Vendor-Specific Locking: If you need to restrict spending to one specific shop or website (e.g., "only Amazon" or "only a specific fuel station chain"), some platforms (like Enfuce or specialised virtual card providers) allow you to lock a card to a specific merchant ID rather than just a category.
• Audit Trail: By using these platforms, you get a digital record of every blocked attempt, which can be useful for identifying training needs or potential policy violations within your team.

Recommendation: If you are currently with a traditional bank, consider switching to one of the platforms mentioned above. They are specifically designed to solve the "lack of control" problem and integrate directly with UK accounting software like Xero, Sage, or QuickBooks.

Yes. In the UK, this feature is usually called merchant-category blocking or MCC controls: an admin blocks selected types of merchants, and transactions coded to those categories may be declined.

Options to look at:

• RBS ClearSpend — offers merchant-category blocking and card limits managed in real time. ¹
• Bank of Scotland Corporate/Purchasing Cards — admins can block merchant-category groups; the bank says blocks can be configured by programme and transactions in blocked groups are declined when authorised. ²
• Handelsbanken Corporate Purchasing Card — offers individual spending limits and merchant-category controls through its online card service. ³
• Soldo — offers per-card controls including approved categories and specific suppliers. ⁴
• Moss — says admins can block merchant categories on virtual cards, as well as set spending and time limits. ⁵

Worth checking before choosing: ask whether the restriction is enforced at authorisation (so the payment is declined), whether it applies to physical as well as virtual cards, and which categories can be blocked. These controls generally use the merchant’s category code, so they may not identify the exact item bought from a broadly classified retailer. ²⁵

Sources: ¹ RBS ClearSpend · ² Bank of Scotland corporate card guide · ³ Handelsbanken Corporate Purchasing Card · ⁴ Soldo corporate cards · ⁵ Moss virtual cards