AddingValue and Production Bureau climbed from joint 33rd last year to 31 and 32 respectively, while Top Banana jumped from 37 to 33.
TMG Events and TMB Events, meanwhile, are joint 34th, up from 40 and 41, followed by The Black Tomato Agency (down from 19) and First event in joint 36th.
Small Planet and Penguins Events, both at 38, and Inntel at 40, are all new entries in the Top 50 Agencies this year.
The Top 50 Agencies table is ranked by event-based turnover and agencies were asked to provide this figure, along with total UK turnover and pre-tax profit, for their most recent financial year, as reported to Companies House.
Click on the links below to read key stats about the agencies: