Boyce is a batting all-rounder and joins the team from Nottinghamshire. She played nine times for Thunder in last year’s KSL with her top score of 38. The-20-year-old has also been part of the England set-up since 2014.
“I am delighted to have been given the opportunity to play my county cricket with the Red Rose,” said Boyce.
“I enjoyed my campaign with Lancashire Thunder in the Kia Super League last year and I am looking forward to playing regularly with this great group of girls,” she added.
Dyson who has signed from Derbyshire is a tall seamer, has been in Thunder’s squad for the last two seasons and is also part of the England Women’s Development programme.
“I have been in and around the Lancashire Thunder set up for the last couple of seasons now, so I know exactly what this Club is all about,” said Dyson.
“The Trafford Cricket Centre at Emirates Old Trafford is a fantastic place to train and I can’t wait to start playing competitive cricket in May,” she added.
The double signing announcement follows the news that former Pakistan international cricketer Atiq Uz-Zaman has been appointed as Head Coach for the 2019 season.
“Georgie and Alice are both talented cricketers and will improve our squad significantly,” he commented.
“It is a great help that they already have experience with Lancashire Thunder and will help them to settle into the dressing room quickly,” said Uz-Zaman
“I am looking forward to working with them both for the remainder of our winter sessions, before beginning the season against Hampshire in May,” he added.
It has also been confirmed that long-serving First XI player, Jess Couser, has moved to Warwickshire due to work circumstances, while Ella Telford, who joined Lancashire in 2017, has moved to Yorkshire – the Club wish both players well.
Lancashire Women start off their campaign with a trip to Hampshire on Sunday 5 May.