Henman lost the first set

The world number five lost the first set and was clearly preserving his injured shoulder but fought back in a workmanlike fashion in the World Group qualifier.

Martin Lee will play Paradorn Srichaphan in Friday's other singles match with Greg Rusedski injured.

Henman 4-6 6-3 6-2 6-2 Udomchoke
Henman saves the best to last and follows a hard first serve in with a deft dink volley at the net.

And the Briton finishes his service game off to take the first rubber and give Britain a lead.

Henman 4-6 6-3 6-2 5-2 Udomchoke
Udomchoke knows he has nothing to lose and is opening his shoulders on every shot.

It works and he races to 40-15 before securing the game.

Henman 4-6 6-3 6-2 5-1 Udomchoke
Henman slips to two break points behind as he gets ahead of himself mentally.

But Udomchoke squanders the first and Henman unleashes an unplayable first serve to save the second.

An ace follows before Udomchoke fires wide to set up possibly the final game.

Henman 4-6 6-3 6-2 4-1 Udomchoke
Udomchoke shows spirit and holds his serve to delay the inevitable.

Henman 4-6 6-3 6-2 4-0 Udomchoke
Udomchoke tries to cling on and reaches deuce but Henman is too strong now and takes another game.

Henman 4-6 6-3 6-2 3-0 Udomchoke
Udomchoke is battling gamely but even against a Henman at only 50% it is not enough.

Henman 4-6 6-3 6-2 2-0 Udomchoke
Henman misses a delicate drop shot but makes amends with a big first serve for 40-30 and holds the game with a smash into an empty court.

Henman 4-6 6-3 6-2 1-0 Udomchoke
Udomchoke goes from 40-15 up to break point down and Henman seizes his chance.

Henman 4-6 6-3 6-2 Udomchoke
Henman is a relieved man as he serves out for the third set to take the lead for the first time in the match.

Henman 4-6 6-3 5-2 Udomchoke
Henman races to three set points but Udomchoke gets a stay of execution as the Briton lets slip his advantage for deuce.

Udomchoke finishes with an ace to stay alive in the set.

Henman 4-6 6-3 5-1 Udomchoke
Henman's kick serve to the backhand is too good for Udomchoke but the wide forehand serve is powered back past the Briton.

But Henman takes the game with a strong volley at the net.

Henman 4-6 6-3 4-1 Udomchoke
Udomchoke fires long to give Henman break point after a series of powewrful returns.

But a chipped backhand slice goes long for Henman and allows Udomchoke back in.

The Thai is nearly caught out by the net cord but recovers to outfox Henman at the net.

The Briton swats back a return with abandon for deuce and benefits from a wide volley from Udomchoke for break point, which he converts.

Henman 4-6 6-3 3-1 Udomchoke
A thrilling rally which Henman wins with a backhand smash takes him to 30-30.

But Udomchoke delivers an exocet of a return to get to break point and finishes the game with a delicate volley at the net.

Henman 4-6 6-3 3-0 Udomchoke
Henman has developed a spring in his step and a crispness in his game that was severely lacking earlier on.

A vintage Henman cross-court passing shot takes advantage of break point for a three-game lead.

Henman 4-6 6-3 2-0 Udomchoke
Henman holds to love and is beginning to assert some authority on court.

Henman 4-6 6-3 1-0 Udomchoke
Henman senses a shift in momentum and takes the first game easily on Udomchoke's serve.

Henman 4-6 6-3 Udomchoke
Henman is still serving within himself and getting punished for a lack of pace and action on the ball.

Henman fights back to 30-30 after following his first serve into the net.

Udomchoke miscues twice to hand Henman the set to level the match. Still far from impressive from the Briton.

Henman 4-6 5-3 Udomchoke
Henman is clearly frustrated with himself but an unforced error from Udomchoke brings it back to deuce.

A double-fault gives Henman set point but he dumps the ball into the net to let Udomchoke off the hook.

A controversial line call gives the Thai advantage but it is his turn to find the net.

And an ace seals it for Udomchoke.

Henman 4-6 5-2 Udomchoke
With the pace of the second set of new balls Udomchoke strokes back Henman's first serve with venom.

But the Briton is happier the faster the game is and surges to take the game easily in the end.

Henman 4-6 4-2 Udomchoke
Henman produces a deft drop volley to claw his way back to deuce but Udomchoke holds a crucial game for Thailand.

Henman 4-6 4-1 Udomchoke
Udomchoke takes Henman to deuce on the Briton's serve and three times prevents Henman from clinching the game.

Eventually Henman holds with two big-hit first serves and can breathe a sigh of relief.

Henman 4-6 3-1 Udomchoke
Henman is showing signs of blasting his way back in to the match but is still peppering his winners with mistakes.

Henman 4-6 3-0 Udomchoke
Henman wastes little time in establishing a three-game lead.

Henman 4-6 2-0 Udomchoke
Udomchoke double-faults en route to giving Henman only his second break point.

Henman is only too pleased to accept.

Henman 4-6 1-0 Udomchoke
Henman knows he is struggling but grinds out the first game of the second set in workmanlike fashion.

First set: Henman 4-6 Udomchoke
Udomchoke races to 30-0 before Henman finds his range with a stunning forehand.

But a wayward and rather limp return from Henman gives Udomchoke two set points.

Henman saves one but Udomchoke grabs the other to win the set in 46 minutes.

First set: Henman 4-5 Udomchoke
Henman quickly finds himself 0-30 down and is under severe pressure.

But two mistakes from Udomchoke hand Henman a lifeline.

The Thai then fires long but recovers quickly with a superb top-spin pass for deuce.

Henman serves out well to keep the set alive.

First set: Henman 3-5 Udomchoke
Udomchoke serves with new balls and the first real baseline rally ensues which Henman loses.

Henman produces a glimmer of world-class form with a disguised forehand pass and reaches 15-30 after luring Udomchoke to the net.

The game goes to deuce and a ding-dong battle ensues before Udomchoke eventually holds.

First set: Henman 3-4 Udomchoke
Henman begins to enjoy more success at the net but is eventually moved around by Udomchoke who reaches deuce.

The Thai takes a break point but Henman fires an ace for deuce, and closes the game with a fortunate net cord and an Udomchoke mis-hit.

First set: Henman 2-4 Udomchoke
Udomchoke is unconcerned that Henman is off colour and races to 40-0 with a delightful passing shot.

The "C'mon Tims" are gathering pace as Henman lets the game slip easily.

First set: Henman 2-3 Udomchoke
Henman's touch is missing and he continues to miss volleys before making amends for game point.

But a lacklustre groundstroke into the net allows Udomchoke back in before Henman wraps it up.

First set: Henman 1-3 Udomchoke
Henman is forced to run around but it seems to revive him.

But Udomchoke is on his game and holds his serve well.

First set: Henman 1-2 Udomchoke
Henman is rusty and quickly slips to 0-40 before double-faulting to lose the game to love.

First set: Henman 1-1 Udomchoke
Udomchoke's serve appears well oiled and he reaches 40-15 before Henman lands a superior cross-court winner. But an ace levels proceedings.

First set: Henman 1-0 Udomchoke
Henman serves first and misdirects his first two volleys at the net as the crowd fall silent.

He fights back to 15-30 but another mis-hit volley gives Udomchoke two break points.

Henman reaches deuce and after a shaky opening, wins the game.

1200 BST: The two players walk out into the darkened arena to a wall of noise - cheering and rock music - and a burst of flashing lights, boxing style.