Oxfordshire Under 20 manager Tim Boycott-Brown says his team face their toughest test yet in Sunday's National Championship semi-final against Yorkshire.

They have only conceded three points in winning their four games so far, but facing Yorkshire at Bradford & Bingley RFC (2.15) will be a different prospect.

Boycott-Brown said: "Yorkshire have got a similar record to us. They have scored over 200 points and conceded 39.

"They have won their games fairly convincingly."

Oxon name their side tomorrow, but Oxford's Dominic Shaw should come in at scrum half as Chinnor's Morgan Thompson has gone to play in New Zealand.

Boycott-Brown added: "The players have been really good this season. They are a close-knit group and have co-operated well."