The 20 most expensive League One transfers - including ex-Portsmouth and Sunderland strikers, Sheffield United defender, Nottingham Forest pair and more!

With the football transfer market inflating in recent years, League One has seen its fair share of ‘big-money’ moves.

This has seen clubs across the division parting with large sums of money to improve and enhance their squads in years gone by.

So who makes the list of the biggest third tier transfers of all time?

Pompey have one figure from their past in the top 10.

The numbers in the list may not be the exact fees, but they’ve been detailed by Transfermarkt.com and Soccerbase.

Nonetheless, here are the top 20 expensive figures paid by League One clubs for transfers.

9. Will Grigg - 12th

To: Wigan From: Brentford Reported transfer fee: £900k Date: 2014 Picture: Nathan Stirk/Getty Images Photo: Nathan Stirk

To: Peterborough From: Bristol City Reported transfer fee: £990k Date: 2020 Picture: Mark Thompson/Getty Images Photo: Mark Thompson

To: Huddersfield From: Bolton Reported transfer fee: £1m Date: 2011 Picture: Chris Brunskill/Getty Images Photo: Chris Brunskill

To: Southampton From: Bristol Rovers Reported transfer fee: £1m Date: 2009 Picture: Clive Rose/Getty Images Photo: Clive Rose