Henley Hawks start their bid to stave of relegation from National League 1 with a home clash against Nottingham tomorrow.

With crucial matches against fellow-strugglers London Welsh and Orrell to follow, it's now or never for Hawks, who hope to welcome back Oxford University's Tom Hayman, Adam Harris, and centre Ali James.

Dave Lubans faces a fitness test, and he will be vying for a place in the squad with fellow Australian Jeff Atkinson.

Steve Green is also doubtful.

Recent signing Paul Laffin is away on a course, so Steve Robinson is included, despite suffering a back problem.

To add cover in the front row, Hawks have called up Tom French, from the Wasps Academy.

Adam Hopcroft will switch to prop from hooker.

Barry Reeves, who injured a knee against Bristol, is ruled out, so Matt Honeyben starts at No 10.

Chinnor can expect a tougher test than their last two games against Oxford Harlequins, when they resume action in South West 1 at Bridgwater.

The home side have lost only four of their 18 games this season, and lie in second place behind promotion-favourites Cinderford.

Fifth-placed Chinnor have to make changes, however.

With Charlie Oyabade unavailable, James Hewitt moves from the wing to full back, with his place going to Chad Ward.

Mike Cook picked up a rib injury during last week's victory over Quins, which means a reshuffle in the back row, where Zane Winslade will be joined by Jack Martin and the experienced John Brookes.

Oxford Harlequins host Cheltenham, looking to bounce back after their exit from the Oxfordshire Cup.

Winger Elio Recchia is having a plate inserted his broken arm this week, while hooker Alistair Halsall has a neck injury.

Both players are out for the season.

Props Will Houston and Paul Molyneaux will push for places, as will Mark Borowski and Paddy Soper in the back row, and winger Will Greenwood. HOW THEY LINE UP Henley (v Nottingham, home): Johnstone, Hopcroft, Hamilton-Smith, Gibbons, Robinson, French, Winterbottom, Harris, Park, Green Lubans, Atkinson, Gates, Holloway, Hayman.

Chinnor (v Bridgwater, away): Hewitt, Ward, Oxley, Shaw, Grimsdell, Cathcart, Thompson, Matthews, Cawston, Winpenny, Hutchins, Burrows, Winslade, Brookes, Martin, Harris, Milburn, McTavish.

Oxford Harlequins (v Cheltenham, home, 2pm KO): from Ralph, Chadbone, Delange, Houston, Molyneaux, Stephenson, Eggar, Brusch, J Cope, Baxter, Soper, Borowski, Grimshaw, Pooler, Ashton, Mawle, Searle, Greenwood, Noyce, A Cope.

Oxford Harlequins 3rd (v Brackley 2nd, home, meet Horspath Rd 1pm).

Oxford Harlequins 4th (v Grove 3rd, home, meet Horspath Rd 12.45pm).

Bicester (v Buckingham, home): A Spencer, G Williams, D Spencer, Wright, Rushworth, Edgar, Risbridger, Brogan, Cassidy, Evans, Shouler (capt), G Williams, D Hulme, Nightingale, Linstrom. Reps: Hicks, R Lee, P Lee, Carder.