Team Shredded Wheat Racing with Gallagher's Tom Chilton headed the way in the opening Free Practice session from Thruxton Circuit this morning. Twenty-three of the 32-car field made the trip to Hampshire for the annual TOCA Support Test and it was the Ford Focus RS leading the early running as teams began to work through their busy programmes for the day. Chilton's 1m15.979s was inside Matt Neal's pole time, and lap record, set in qualifying here last year.  "Thruxton's one of my favourite circuits, along with Brands Hatch. I do love it here." said Chilton. "I used to be an instructor here, so I know it very well. We worked through some qualifying runs this morning and we may use some newer Dunlops this afternoon to see where we can go. "You've got the combination today where the track's warm enough for the tyre to work well but it's cool enough for the engine. I was pushing quite hard, and we'll change the set up to see if there's any more time to gain this afternoon." Senna Proctor continued where he left off at Brands Hatch with the second fastest time of the morning, just a tenth-of-a-second shy of Chilton's timesheet-topper, with his Power Maxed with TAG Racing team-mate Josh Cook making it two Vauxhall Astras in the top three. The new-generation FK8 Honda Civic Type R, in the hands of Dan Cammish, rounded in fourth spot with reigning champ Ash Sutton and Trade Price Cars with Brisky Racing's Mike Bushell completing the top six. As is always the case in testing, however, pace is not always the immediate priority – especially during the opening throes of the campaign. Teams and drivers are continuing the learning process as they look to unlock their 2018 machinery and evaluate the Dunlop SportMaxx compound for the Thruxton race weekend, 19-20 May. 2018 Dunlop MSA British Touring Car Championship – Free Practice 1 – TOCA Support Test – Thruxton Circuit Tom CHILTON (GBR) Team Shredded Wheat Racing with Gallagher 1m15.979s 2 Senna PROCTOR (GBR) Power Maxed TAG Racing +0.130s Josh COOK (GBR) Power Maxed TAG Racing +0.168s Dan CAMMISH (GBR) Halfords Yuasa Racing +0.240s Ashley SUTTON (GBR) Adrian Flux Subaru Racing +0.396s 6 Mike BUSHELL (GBR) Trade Price Cars with Brisky Racing +0.538s 7 Adam MORGAN (GBR) Mac Tools with Ciceley Motorsport +0.584s Andrew JORDAN (GBR) BMW Pirtek Racing +0.686s 9 Colin TURKINGTON (GBR) Team BMW +0.709s 10 Brett SMITH (GBR) WIX Racing with Eurotech +0.792s 11 Aiden MOFFAT (GBR) Laser Tools Racing +0.860s 12 James COLE (GBR) Team Shredded Wheat Racing with Gallagher +0.960s 13 Rob AUSTIN (GBR) DUO Motorsport with HMS Racing +0.972s 14 Sam TORDOFF (GBR) Team GardX Racing with Motorbase +0.998s 15 Matt NEAL (GBR) Halfords Yuasa Racing +1.106s 16 Matt SIMPSON (GBR) Simpson Racing +1.162s 17 Tom OLIPHANT (GBR) Ciceley Motorsport +1.483s 18 Jack GOFF (GBR) WIX Racing with Eurotech +1.604s 19 Stephen JELLEY (GBR) Team Parker Racing +1.810s 20 Rob COLLARD (GBR) Team BMW +1.829s 21 Jason PLATO (GBR) Adrian Flux Subaru Racing +1.985s 22 Josh PRICE (GBR) Autoglym Academy Racing +2.335s 23 Sam SMELT (GBR) AmD with Cobra Exhausts +2.826s