The 29-year-old, who has had two previous spells with Rangers, has put pen to paper on a deal until January 4 after Posh manager Darren Ferguson signed Dagenham defender Scott Griffiths last month.

Jim Magilton told the club's official website: "When we heard that Tommy might be available on loan, there was no holding us back.

"We couldn't be more delighted to bring in a player of his calibre and experience."

Williams, whose contract at London Road expires this summer, said: "I enjoyed my time here previously and I can't wait to pull on the jersey and hopefully cement my place in the side.

"There's a very strong squad of players here, but the club's ambitions match my own and I genuinely believe we can build on the fantastic start the lads have made to the season."