The Nottinghamshire Academy trio of Sam Kelsall, Brett Hutton and Sam Wood have all signed two-year professional contracts with the club.
All three have represented England at Under-19 level over the past couple of years and will be hopeful of securing a berth in this year's Under-19 world cup.
The Surrey duo of Tom Jewell and Tom Lancefield have penned one-year contract extensions that will see them remain at The Oval until the end of the 2012 season. Both men are products of the county's Academy and have come through the Surrey age-group system.
Seventeen year-old off-spinner Peter Burgoyne has signed a two-year contract with Derbyshire. For the first year he will be on a summer contract as he completes his A-Levels, while in the second year he will be playing as a full-time professional.
Essex left-arm spinner Tim Phillips has signed a new one-year contract with the club.
The 30 year-old, who was born in Cambridge and represented Durham University, enjoyed a prolific Friends Life t20 campaign that saw him take 26 wickets at an average of 13, but, like the team, he endured a frustrating time of things in the County Championship resulting in him being replaced in the side by young leg-spinner Tom Craddock.
Kevin O'Brien, the hard-hitting Gloucestershire and Ireland batsman, received the 2011 Walter Lawrence Trophy - supported by Veuve Clicquot - for his 44-ball hundred at the traditional presentation dinner in The Long Room at Lordâ€™s on October 18.
O'Brien, who thumped 9 sixes and 7 fours in his hundred, finishing with 119 off 52 balls, was presented with the Trophy and a cheque for Â£5,000 from former England and Somerset all-rounder Vic Marks, who was guest speaker for the evening.
Will Smith has agreed a new two-year deal with Durham, just over a year after losing the captaincy and his place in the team.
The 29 year-old said of the news, "I've enjoyed this season a lot. I've felt comfortable in the middle and what's just as important to me as scoring the runs is knowing that I've played some important innings, which have helped us win games. I'm delighted to be staying with Durham for another two years.
Middlesex Director of Cricket Angus Fraser has been busy readying his squad for life in Division One over the past couple of days by securing the services of three players and dispensing with all-rounder Jamie Dalrymple for the second time in his career.
Academy graduate Mark Wood has signed a two-year contract with Durham that will see him remain at the club until the end of the 2013 season.
The 21 year-old, who has been a member of Durham's prolific Academy since 2007, said of the announcement, "I've been a part of the Durham set up for a few years now and it feels great to be making that next step up to the professional squad."