Welch Motorsport will miss the sixth round of the 2015 British Touring Car Championship at Snetterton this weekend after failing to take supply of engine parts for its Proton Persona machines.

Both Andy Wilmot and Daniel Welch will be forced to skip the Norfolk circuit event after not receiving reliability-related engine parts from overseas suppliers, which tam principal John Welch says the team cannot compete without.

"In our attempts to continue to move forward we made a decision to update our engines with what we saw as vital reliability-related parts," Welch said. "Unfortunately we have been let down by an overseas supplier in this regard and will not be able to complete the engine build until these components arrive.

"This is obviously a frustrating situation for all concerned, but we must thank our partners and sponsors who have all been extremely supportive towards what we believe is a bright long-term future for Welch Motorsport."

Welch confirmed he expects his Hampshire-based team to return for round seven at Knockhill on the 22-23 August.

"Naturally we are extremely disappointed to be missing the event at Snetterton this weekend," Welch added. "Whilst it has been a challenging season thus far we have been making extremely good progress in recent weeks and months."

After struggling to get the Proton Persona machines racing during the opening two rounds Welch Motorsport had began to find a level of consistency and scored its first point of the season in race three at Oulton Park when Daniel Welch notched up a 15th-place finish.