Mrembo

The headline stat is Bath. Three wins from just seven races at that track makes Mrembo something close to a course specialist — that's winning 3 in every 7 times she turns up there, which is a remarkable return for a horse who wins only 1 in every 9 races overall (5 wins from 47). Her first career win came at Bath in May 2022, and her most recent win — anywhere — came at Bath in May 2025. The track clearly suits her in a way others simply don't. At the Class 5 level where she typically competes, she's won just 1 from 23 races, a 4% rate that tells its own story: she's a horse who needs everything to click.

That includes the ground. Portman is clear she wants fast, dry conditions, and he's also candid that tactics let her down on her last outing at Salisbury — the pace was too hot too soon, she couldn't sustain it, and she finished sixth. The four runs before that all brought a place finish, so the engine is still ticking even without a win in her last six races. Portman believes there's more winning in her at her current level and has mentioned a possible trip to Brighton later in the month as the next target.

Most of her racing has been done alongside jockey Olivia Tubb, who has ridden her in 20 of her 47 races and won 3 of them together — a win rate of 15%, which comfortably beats Mrembo's overall 11% career average. That partnership clearly brings something out of her. Portman's yard at Upper Lambourn has been in fine form this season with 46 winners, so the infrastructure is there. The question, as it always seems to be with Mrembo, is whether the horse herself decides it's a good day to race.