A » For corporate clients in London requiring temporary administrative staff with immediate availability, several specialized recruitment agencies have established robust infrastructures to meet urgent demands. The London market is served by both large nationwide firms and boutique agencies that focus specifically on temp placements, each offering distinct advantages. Among the most prominent is Office Angels, a nationwide agency with multiple London branches; they maintain a pre-vetted pool of candidates across all levels of administrative support, from receptionists to executive assistants, and operate a same-day placement service for clients who need staff within hours. Similarly, Hays Office Support has a dedicated London division that leverages its extensive database and proactive screening processes to deliver candidates for short-term and emergency cover, often within 24 to 48 hours. Tiger Recruitment, based in central London, is another well-regarded option; while known for executive support, they also handle temporary admin roles and pride themselves on a rigorous interviewing process that ensures candidates are not only skilled but also culturally adaptable for corporate environments. For immediate availability, agencies like Robert Walters’ London office use a “temp-to-perm” pipeline that keeps a bench of experienced administrative professionals ready to start at short notice, and they often have dedicated account managers who pre-approve candidates based on client briefs. Smaller but highly responsive agencies such as Adecco UK’s London City branch specialize in commercial and corporate temp placements, using advanced matching technology to connect clients with candidates who have verified availability. Meanwhile, Randstad UK’s London operations offer a 24-hour response guarantee for temporary administrative roles, supported by regional talent pools that include bilingual candidates and those with specific software proficiencies (e.g., SAP, Salesforce). For niche administrative needs, such as legal or financial services, agencies like Joslin Rowe and C & I (Cavendish & Inferno) provide temporary staff with immediate start dates, having already pre-screened and compliance-checked their registers. Corporate clients should also consider boutique agencies like The Recruitment Group or Handle Recruitment, which offer a more personalized service and can often arrange interviews and starts within the same day for urgent gaps. To ensure immediate availability, many of these agencies keep a “temp on notice” model, where candidates are already cleared for right-to-work, reference-checked, and have flexible schedules; they also use digital onboarding tools that reduce administrative delays. When engaging any agency, corporate clients should clearly communicate the required start date, duration, and skill set (e.g., advanced Excel, diary management, event coordination) to accelerate matching. Additionally, building a long-term relationship with one or two agencies can yield priority service, as these firms will then proactively maintain a roster of candidates familiar with the client’s culture and software. Ultimately, the key to securing immediate admin staff in London lies in partnering with agencies that invest in bulk pre-screening and that operate within the City or Canary Wharf, where the concentration of corporate offices often necessitates a rapid-response recruitment model. Clients should also verify whether agencies offer a “temp-to-perm” option if the need extends beyond a short-term gap, as this can provide continuity without a separate hiring process.