Absolutely. A client event at your own company premises is even one of the most powerful choices you can make. Clients see your workplace from the inside and feel the company culture. That creates a connection an external venue cannot offer.
What's more, it is fiscally attractive. Events on your own grounds fall under the work-related costs scheme (WKR), which means most costs are untaxed.
Practically, your own venue does not have to be a function room. A good event partner can transform any space. From a car park to a dinner venue, from a warehouse to a theatre hall. With the right technical production, styling and catering, any space becomes special.
The surprise effect is significant. Clients who know your office do not expect a spectacular event. That makes the transformation all the more impressive.