The2015 Avon Tyres British GT season was the 23rd season of theBritish GT Championship. The season began on 6 April atOulton Park and finished on 13 September atDonington Park, after nine rounds held over seven meetings.Beechdean Motorsport won both the GT3 and GT4 drivers championships. Team ownerAndrew Howard won his second title withJonathan Adam in GT3 whileJamie Chadwick andRoss Gunn claimed honours in GT4.
The provisional 2015 calendar was announced on 5 November 2014.[42]Spa-Francorchamps will host a two-hour endurance race as opposed to two hour-long races in2014. All races except Belgian round at Spa, were held in the United Kingdom.
| Round | Circuit | Date | Length | Pole position | GT3 winner | GT4 winner |
|---|---|---|---|---|---|---|
| 1 | Oulton Park | 6 April | 60 mins | No. 6Oman Racing Team | No. 6Oman Racing Team | No. 50Optimum Motorsport |
 Rory ButcherLiam Griffin | Rory ButcherLiam Griffin | Graham JohnsonMike Robinson | ||||
| 2 | 60 mins | No. 007Beechdean-AMR | No. 007Beechdean-AMR | No. 77ISSY Racing | ||
| Jonathan AdamAndrew Howard | Jonathan AdamAndrew Howard | Gavan KershawOz Yusuf | ||||
| 3 | Rockingham | 3 May | 120 mins | No. 1Ecurie Ecosse | No. 1Ecurie Ecosse | No. 407Beechdean-AMR |
| Marco AttardAlexander Sims | Marco AttardAlexander Sims | Jamie ChadwickRoss Gunn | ||||
| 4 | Silverstone Arena | 31 May | 180 mins | No. 007Beechdean-AMR | No. 12Von Ryan Racing | No. 407Beechdean-AMR |
| Jonathan AdamAndrew Howard | Adrian Quaife-Hobbs Gilles Vannelet | Jamie ChadwickRoss Gunn | ||||
| 5 | Spa-Francorchamps | 11 July | 120 mins | No. 007Beechdean-AMR | No. 007Beechdean-AMR | No. 77ISSY Racing |
| Jonathan AdamAndrew Howard | Jonathan AdamAndrew Howard | Gavan KershawOz Yusuf | ||||
| 6 | Brands Hatch GP | 2 August | 120 mins | No. 007Beechdean-AMR | No. 1Ecurie Ecosse | No. 56Tolman Motorsport |
| Jonathan AdamAndrew Howard | Marco AttardAlexander Sims | David PattisonLuke Davenport | ||||
| 7 | Snetterton | 23 August | 60 mins | No. 27TF Sport | No. 6Oman Racing Team | No. 77ISSY Racing |
| Jody FanninAndrew Jarman | Rory ButcherLiam Griffin | Gavan KershawOz Yusuf | ||||
| 8 | 60 mins | No. 1Ecurie Ecosse | No. 007Beechdean-AMR | No. 48Fox Motorsport | ||
| Marco AttardAlexander Sims | Jonathan AdamAndrew Howard | Jamie Stanley Fulvio Mussi | ||||
| 9 | Donington Park | 13 September | 120 mins | No. 27TF Sport | No. 17TF Sport | No. 62Academy Motorsport |
| Jody FanninAndrew Jarman | Matt BellDerek Johnston | Daniel LloydChris Webster |
Points are awarded as follows:
| Length | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| 60 mins | 25 | 18 | 15 | 12 | 10 | 8 | 6 | 4 | 2 | 1 |
| 60+ mins | 37.5 | 27 | 22.5 | 18 | 15 | 12 | 9 | 6 | 3 | 1.5 |
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