• Between 11.00pm on 8 December and 7.30am on Tuesday 9th December 2014 in Spring Gardens, Marlow. Drills and other tools were stolen
• Between 5.00pm on 10 December and 7.45am on Thursday 11th December 2014 in Forest Way in High Wycombe. Various tools, including drills and batteries, were stolen
• Between 8.30pm and 9.30pm on Thursday 11th December 2014 in West Wycombe Road, High Wycombe. Various tools, including laser level and power drill, stolen
• Between 11.00pm and 11.15pm on Thursday 11th December 2014 in Desborough Avenue, High Wycombe. Two Bosch drills, plus chargers and bits were stolen
• Between 7.00pm on 11 December and 6.30am on Friday 12th December 2014 in London Road, High Wycombe. Various tools, including drills and grinders, were stolen
• Between 7.00pm on 11 December and 6.30am on Friday 12th December 2014 in London Road, High Wycombe. Various tools stolen
• Between 7.00pm on 11 December and 6.30am on Friday 12th December 2014 in London Road, High Wycombe. Various tools stolen
• Between 12.30am and 6.30am on Friday 19th December 2014 in Crest Road, High Wycombe. A hand tool was stolen
• Between 11.59pm on 7 January and 8.30am on Thursday 8th January 2015 in Bowerdean Road, High Wycombe. Various tools, including a strimmer and leaf blower, were stolen
• Between 4.30pm on 10 January and 11.30am on Sunday 11th January 2015 in Squirrel Lane, High Wycombe. Cash, keys and debit card were stolen
• Between 8.00pm on 9 January and 7.00am on Monday 12th January 2015 in Windsor Drive, High Wycombe. Tools were stolen
• Between 11.00pm on 11 January and 6.00am on Monday 12th January 2015 in Sedgmoor Road, Flackwell Heath. A radio, battery, drill battery and two drills were stolen
• Between 11.00pm on 11 January and 6.00am on Monday 12th January 2015 in Sedgmoor Road, Flackwell Heath. A box of plumbing sundries was stolen
• Between 10.45pm and 11.30pm on Monday 12th January 2015 in London Road, High Wymcombe. A CAT scanner and generator was stolen
• Between 8.00pm on 12 January and 6.00am on Tuesday 13th January 2015 in Short Street, High Wycombe. A power tool and hand saw were stolen
• Between 9.00pm on 12 January and 6.15am on Tuesday 13th January 2015 in London Road, High Wycombe. A CAT scanner, genny and chain saw were stolen
• Between 9.00pm on 12 January and 6.15am on Tuesday 13th January 2015 in London Road, High Wycombe. A blue socket set and CAT scanner were stolen
• Between 5.00pm on 12 January and 10.00am on Tuesday 13th January 2015 in Carisbrooke Avenue, High Wycombe. Hand and car repair tools stolen
• Between 5.00pm on 13 January and 12.00pm on Thursday 1th5 January 2015 in Shields Court, Tylers Green. Various power tools, including drills and angle grinder, stolen

There was also an attempted theft from a motor vehicle between 7.30pm on  Tuesday 9th December 2014 and 7.30am on  Wednesday 9th December 2014 in London Road, High Wycombe. The incident involved a Vauxhall Vivaro. No entry was gained and nothing was taken.

All 20 of the incidents are being linked by police.

Det Con Caroline Timmis, of High Wycombe Local CID, said: ‘The advice we would give owners of Ford Transit vans is, if they can, remove tools from their vehicles overnight. If that is not possible, make sure the van is parked in as safe and well-lit an area as possible.

Ford Transit owners should also make sure their tools are marked in some way and that they have recorded any serial numbers they have on them, so the tools can be returned if they are recovered.

I also ask for people living in the High Wycombe and Marlow areas to be aware of and report any suspicious activity around Ford Transit vans.‘

Thames Valley Police are appealing for anyone with information about any of the incidents to please contact investigating officer Det Con Timmis via the 24-hour enquiry line 101.

If you do not want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111. No personal details are taken, information is not traced or recorded and you will not go to court.